15238967172 has 48 divisors (see below), whose sum is σ = 41773956672. Its totient is φ = 4262647680.

The previous prime is 15238967171. The next prime is 15238967179. The reversal of 15238967172 is 27176983251.

It is a super-2 number, since 2×15238967172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15238967171) 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, 4438543 + ... + 4441974.

It is an arithmetic number, because the mean of its divisors is an integer number (870290764).

Almost surely, 2^15238967172 is an apocalyptic number.

15238967172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15238967172 is an abundant number, since it is smaller than the sum of its proper divisors (26534989500).

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

15238967172 is a wasteful number, since it uses less digits than its factorization.

15238967172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880548 (or 8880546 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The spelling of 15238967172 in words is "fifteen billion, two hundred thirty-eight million, nine hundred sixty-seven thousand, one hundred seventy-two".