87236580 has 24 divisors (see below), whose sum is σ = 244262592. Its totient is φ = 23263072.

The previous prime is 87236557. The next prime is 87236587. The reversal of 87236580 is 8563278.

It is a super-2 number, since 2×87236580² = 15220441780192800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (87236587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726912 + ... + 727031.

It is an arithmetic number, because the mean of its divisors is an integer number (10177608).

Almost surely, 2^87236580 is an apocalyptic number.

It is an amenable number.

87236580 is an abundant number, since it is smaller than the sum of its proper divisors (157026012).

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

87236580 is a wasteful number, since it uses less digits than its factorization.

87236580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453955 (or 1453953 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 87236580 is about 9340.0524623794. The cubic root of 87236580 is about 443.5060451058.

The spelling of 87236580 in words is "eighty-seven million, two hundred thirty-six thousand, five hundred eighty".