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12072405144 = 23331433531069
BaseRepresentation
bin10110011111001001…
…00100100010011000
31011011100100201112110
423033210210202120
5144211013431034
65313533312320
7605110515312
oct131744444230
934140321473
1012072405144
115135615738
12240b0356a0
1311a5165cc7
148274a87b2
154a9cc3de9
hex2cf924898

12072405144 has 128 divisors (see below), whose sum is σ = 31999334400. Its totient is φ = 3789434880.

The previous prime is 12072405133. The next prime is 12072405167. The reversal of 12072405144 is 44150427021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11292642 + ... + 11293710.

It is an arithmetic number, because the mean of its divisors is an integer number (249994800).

Almost surely, 212072405144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12072405144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15999667200).

12072405144 is an abundant number, since it is smaller than the sum of its proper divisors (19926929256).

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

12072405144 is a wasteful number, since it uses less digits than its factorization.

12072405144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The spelling of 12072405144 in words is "twelve billion, seventy-two million, four hundred five thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 24 31 43 62 86 93 124 129 172 186 248 258 344 353 372 516 706 744 1032 1059 1069 1333 1412 2118 2138 2666 2824 3207 3999 4236 4276 5332 6414 7998 8472 8552 10664 10943 12828 15179 15996 21886 25656 30358 31992 32829 33139 43772 45537 45967 60716 65658 66278 87544 91074 91934 99417 121432 131316 132556 137901 182148 183868 198834 262632 265112 275802 364296 367736 377357 397668 470549 551604 754714 795336 941098 1103208 1132071 1411647 1424977 1509428 1882196 2264142 2823294 2849954 3018856 3764392 4274931 4528284 5646588 5699908 8549862 9056568 11293176 11399816 11698067 16226351 17099724 23396134 32452702 34199448 35094201 46792268 48679053 64905404 70188402 93584536 97358106 129810808 140376804 194716212 280753608 389432424 503016881 1006033762 1509050643 2012067524 3018101286 4024135048 6036202572 12072405144