15149707728 has 20 divisors (see below), whose sum is σ = 39136745088. Its totient is φ = 5049902560.

The previous prime is 15149707697. The next prime is 15149707733. The reversal of 15149707728 is 82770794151.

It is a super-3 number, since 3×15149707728³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157809408 + ... + 157809503.

Almost surely, 2^15149707728 is an apocalyptic number.

It is an amenable number.

15149707728 is an abundant number, since it is smaller than the sum of its proper divisors (23987037360).

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

15149707728 is a wasteful number, since it uses less digits than its factorization.

15149707728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315618922 (or 315618916 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 15149707728 in words is "fifteen billion, one hundred forty-nine million, seven hundred seven thousand, seven hundred twenty-eight".