89215812 has 36 divisors (see below), whose sum is σ = 257735296. Its totient is φ = 25490160.

The previous prime is 89215807. The next prime is 89215829. The reversal of 89215812 is 21851298.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×89215812² = 15918922221638688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176764 + ... + 177267.

Almost surely, 2^89215812 is an apocalyptic number.

It is an amenable number.

89215812 is an abundant number, since it is smaller than the sum of its proper divisors (168519484).

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

89215812 is a wasteful number, since it uses less digits than its factorization.

89215812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354048 (or 354043 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 89215812 is about 9445.4122196969. The cubic root of 89215812 is about 446.8350967483.

The spelling of 89215812 in words is "eighty-nine million, two hundred fifteen thousand, eight hundred twelve".