86572404 has 18 divisors (see below), whose sum is σ = 218835890. Its totient is φ = 28857456.

The previous prime is 86572399. The next prime is 86572433. The reversal of 86572404 is 40427568.

86572404 is a `hidden beast` number, since 86 + 572 + 4 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 14288400 = 8502^2 + 3780^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×86572404² = 14989562268678432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2404789 = 86572404 / (8 + 6 + 5 + 7 + 2 + 4 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1202359 + ... + 1202430.

Almost surely, 2^86572404 is an apocalyptic number.

It is an amenable number.

86572404 is an abundant number, since it is smaller than the sum of its proper divisors (132263486).

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

86572404 is a wasteful number, since it uses less digits than its factorization.

86572404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404799 (or 2404794 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 86572404 is about 9304.4292678272. The cubic root of 86572404 is about 442.3776315853.

The spelling of 86572404 in words is "eighty-six million, five hundred seventy-two thousand, four hundred four".