7900987536 has 120 divisors (see below), whose sum is σ = 24694808320. Its totient is φ = 2431057536.

The previous prime is 7900987519. The next prime is 7900987547. The reversal of 7900987536 is 6357890097.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27616 + ... + 128703.

Almost surely, 2^7900987536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7900987536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12347404160).

7900987536 is an abundant number, since it is smaller than the sum of its proper divisors (16793820784).

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

7900987536 is a wasteful number, since it uses less digits than its factorization.

7900987536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156355 (or 156337 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 7900987536 is about 88887.4993235832. The cubic root of 7900987536 is about 1991.7146855117.

The spelling of 7900987536 in words is "seven billion, nine hundred million, nine hundred eighty-seven thousand, five hundred thirty-six".