Search a number
-
+
12238524288 = 27321572431
BaseRepresentation
bin10110110010111100…
…10000111110000000
31011120220221110011100
423121132100332000
5200031030234123
65342230014400
7612165511554
oct133136207600
934526843140
1012238524288
115210367491
1224567a7400
1312006b9a63
1484158b864
154b9689643
hex2d9790f80

12238524288 has 144 divisors (see below), whose sum is σ = 35525608560. Its totient is φ = 4044119040.

The previous prime is 12238524271. The next prime is 12238524289. The reversal of 12238524288 is 88242583221.

12238524288 is a `hidden beast` number, since 1 + 22 + 385 + 242 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238524289) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28395433 + ... + 28395863.

It is an arithmetic number, because the mean of its divisors is an integer number (246705615).

Almost surely, 212238524288 is an apocalyptic number.

12238524288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12238524288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17762804280).

12238524288 is an abundant number, since it is smaller than the sum of its proper divisors (23287084272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12238524288 is an equidigital number, since it uses as much as digits as its factorization.

12238524288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 593 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The spelling of 12238524288 in words is "twelve billion, two hundred thirty-eight million, five hundred twenty-four thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 157 192 288 314 384 431 471 576 628 862 942 1152 1256 1293 1413 1724 1884 2512 2586 2826 3448 3768 3879 5024 5172 5652 6896 7536 7758 10048 10344 11304 13792 15072 15516 20096 20688 22608 24649 27584 30144 31032 41376 45216 49298 55168 60288 62064 67667 73947 82752 90432 98596 124128 135334 147894 165504 180864 197192 203001 221841 248256 270668 295788 394384 406002 443682 496512 541336 591576 609003 788768 812004 887364 1082672 1183152 1218006 1577536 1624008 1774728 2165344 2366304 2436012 3155072 3248016 3549456 4330688 4732608 4872024 6496032 7098912 8661376 9465216 9744048 10623719 12992064 14197824 19488096 21247438 25984128 28395648 31871157 38976192 42494876 63742314 77952384 84989752 95613471 127484628 169979504 191226942 254969256 339959008 382453884 509938512 679918016 764907768 1019877024 1359836032 1529815536 2039754048 3059631072 4079508096 6119262144 12238524288