86788928 has 14 divisors (see below), whose sum is σ = 172221906. Its totient is φ = 43394432.

The previous prime is 86788873. The next prime is 86788943. The reversal of 86788928 is 82988768.

It can be written as a sum of positive squares in only one way, i.e., 56670784 + 30118144 = 7528^2 + 5488^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677975 + ... + 678102.

Almost surely, 2^86788928 is an apocalyptic number.

It is an amenable number.

86788928 is a deficient number, since it is larger than the sum of its proper divisors (85432978).

86788928 is a wasteful number, since it uses less digits than its factorization.

86788928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356089 (or 1356079 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 56.

The square root of 86788928 is about 9316.0575352453. The cubic root of 86788928 is about 442.7461309578.

The spelling of 86788928 in words is "eighty-six million, seven hundred eighty-eight thousand, nine hundred twenty-eight".