86572538 has 8 divisors (see below), whose sum is σ = 139847988. Its totient is φ = 39956544.

The previous prime is 86572513. The next prime is 86572547. The reversal of 86572538 is 83527568.

It can be written as a sum of positive squares in 2 ways, for example, as 85618009 + 954529 = 9253^2 + 977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×86572538² = 14989608671522888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664831 + ... + 1664882.

Almost surely, 2^86572538 is an apocalyptic number.

86572538 is a deficient number, since it is larger than the sum of its proper divisors (53275450).

86572538 is a wasteful number, since it uses less digits than its factorization.

86572538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329728.

The product of its digits is 403200, while the sum is 44.

The square root of 86572538 is about 9304.4364686960. The cubic root of 86572538 is about 442.3778598281.

The spelling of 86572538 in words is "eighty-six million, five hundred seventy-two thousand, five hundred thirty-eight".