15138875028 has 48 divisors (see below), whose sum is σ = 36089544960. Its totient is φ = 4937017344.

The previous prime is 15138875027. The next prime is 15138875033. The reversal of 15138875028 is 82057883151.

It is a super-2 number, since 2×15138875028² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138875027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2903688 + ... + 2908896.

It is an arithmetic number, because the mean of its divisors is an integer number (751865520).

Almost surely, 2^15138875028 is an apocalyptic number.

It is an amenable number.

15138875028 is an abundant number, since it is smaller than the sum of its proper divisors (20950669932).

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

15138875028 is a wasteful number, since it uses less digits than its factorization.

15138875028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416 (or 10414 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 15138875028 in words is "fifteen billion, one hundred thirty-eight million, eight hundred seventy-five thousand, twenty-eight".