90445212 has 72 divisors (see below), whose sum is σ = 268610160. Its totient is φ = 25297920.

The previous prime is 90445207. The next prime is 90445217. The reversal of 90445212 is 21254409.

90445212 is a `hidden beast` number, since 9 + 0 + 445 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (90445207) and next prime (90445217).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90445217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3637 + ... + 13932.

Almost surely, 2^90445212 is an apocalyptic number.

It is an amenable number.

90445212 is an abundant number, since it is smaller than the sum of its proper divisors (178164948).

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

90445212 is a wasteful number, since it uses less digits than its factorization.

90445212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603 (or 17598 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 90445212 is about 9510.2687659182. The cubic root of 90445212 is about 448.8782132746.

The spelling of 90445212 in words is "ninety million, four hundred forty-five thousand, two hundred twelve".