86666928 has 20 divisors (see below), whose sum is σ = 223889688. Its totient is φ = 28888960.

The previous prime is 86666911. The next prime is 86666939. The reversal of 86666928 is 82966668.

It is a super-2 number, since 2×86666928² = 15022312817914368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902733 + ... + 902828.

Almost surely, 2^86666928 is an apocalyptic number.

It is an amenable number.

86666928 is an abundant number, since it is smaller than the sum of its proper divisors (137222760).

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

86666928 is a wasteful number, since it uses less digits than its factorization.

86666928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805572 (or 1805566 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 86666928 is about 9309.5073983536. The cubic root of 86666928 is about 442.5385762277.

The spelling of 86666928 in words is "eighty-six million, six hundred sixty-six thousand, nine hundred twenty-eight".