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12552030420 = 22351913780369
BaseRepresentation
bin10111011000010100…
…01100100011010100
31012101202212012201120
423230022030203110
5201201304433140
65433305323540
7623023332606
oct135412144324
935352765646
1012552030420
115361326266
1225237965b0
131250636247
14871079176
154d6e651d0
hex2ec28c8d4

12552030420 has 96 divisors (see below), whose sum is σ = 37265961600. Its totient is φ = 3147853824.

The previous prime is 12552030409. The next prime is 12552030433. The reversal of 12552030420 is 2403025521.

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, 115996 + ... + 196364.

It is an arithmetic number, because the mean of its divisors is an integer number (388187100).

Almost surely, 212552030420 is an apocalyptic number.

12552030420 is a gapful number since it is divisible by the number (10) 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 12552030420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18632980800).

12552030420 is an abundant number, since it is smaller than the sum of its proper divisors (24713931180).

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

12552030420 is a wasteful number, since it uses less digits than its factorization.

12552030420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80537 (or 80535 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 12552030420 its reverse (2403025521), we get a palindrome (14955055941).

The spelling of 12552030420 in words is "twelve billion, five hundred fifty-two million, thirty thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 137 190 228 274 285 380 411 548 570 685 822 1140 1370 1644 2055 2603 2740 4110 5206 7809 8220 10412 13015 15618 26030 31236 39045 52060 78090 80369 156180 160738 241107 321476 401845 482214 803690 964428 1205535 1527011 1607380 2411070 3054022 4581033 4822140 6108044 7635055 9162066 11010553 15270110 18324132 22021106 22905165 30540220 33031659 44042212 45810330 55052765 66063318 91620660 110105530 132126636 165158295 209200507 220211060 330316590 418401014 627601521 660633180 836802028 1046002535 1255203042 2092005070 2510406084 3138007605 4184010140 6276015210 12552030420