87736128 has 28 divisors (see below), whose sum is σ = 232135680. Its totient is φ = 29245312.

The previous prime is 87736123. The next prime is 87736141. The reversal of 87736128 is 82163778.

It is a self number, because there is not a number n which added to its sum of digits gives 87736128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87736123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228288 + ... + 228671.

It is an arithmetic number, because the mean of its divisors is an integer number (8290560).

Almost surely, 2^87736128 is an apocalyptic number.

It is an amenable number.

87736128 is an abundant number, since it is smaller than the sum of its proper divisors (144399552).

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

87736128 is a wasteful number, since it uses less digits than its factorization.

87736128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456974 (or 456964 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 87736128 is about 9366.7565357492. The cubic root of 87736128 is about 444.3509926479.

The spelling of 87736128 in words is "eighty-seven million, seven hundred thirty-six thousand, one hundred twenty-eight".