86908928 has 42 divisors (see below), whose sum is σ = 175511079. Its totient is φ = 43032576.

The previous prime is 86908901. The next prime is 86908933. The reversal of 86908928 is 82980968.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 43454464 + 43454464 = 6592^2 + 6592^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6592.

It is a super-2 number, since 2×86908928² = 15106323532218368, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 843725 + ... + 843827.

Almost surely, 2^86908928 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 86908928

86908928 is an abundant number, since it is smaller than the sum of its proper divisors (88602151).

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

86908928 is an frugal number, since it uses more digits than its factorization.

86908928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 86908928 is about 9322.4958031634. The cubic root of 86908928 is about 442.9500934867.

Multiplying 86908928 by its sum of digits (50), we get a square (4345446400 = 65920²).

The spelling of 86908928 in words is "eighty-six million, nine hundred eight thousand, nine hundred twenty-eight".