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12815003152 = 247114419671
BaseRepresentation
bin10111110111101010…
…10110111000010000
31020002002200121111101
423323311112320100
5202221120100102
65515341554144
7632365505140
oct137365267020
936062617441
1012815003152
11548680a5a6
122597875954
131292c6b603
14897d70920
155000ace87
hex2fbd56e10

12815003152 has 20 divisors (see below), whose sum is σ = 28376078656. Its totient is φ = 5492144160.

The previous prime is 12815003143. The next prime is 12815003177. The reversal of 12815003152 is 25130051821.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 12815003152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57209724 + ... + 57209947.

Almost surely, 212815003152 is an apocalyptic number.

It is an amenable number.

12815003152 is an abundant number, since it is smaller than the sum of its proper divisors (15561075504).

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

12815003152 is a wasteful number, since it uses less digits than its factorization.

12815003152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114419686 (or 114419680 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 12815003152 its reverse (25130051821), we get a palindrome (37945054973).

The spelling of 12815003152 in words is "twelve billion, eight hundred fifteen million, three thousand, one hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 28 56 112 114419671 228839342 457678684 800937697 915357368 1601875394 1830714736 3203750788 6407501576 12815003152