90207612 has 36 divisors (see below), whose sum is σ = 248755416. Its totient is φ = 27335520.

The previous prime is 90207589. The next prime is 90207629. The reversal of 90207612 is 21670209.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113503 + ... + 114294.

Almost surely, 2^90207612 is an apocalyptic number.

It is an amenable number.

90207612 is an abundant number, since it is smaller than the sum of its proper divisors (158547804).

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

90207612 is a wasteful number, since it uses less digits than its factorization.

90207612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227818 (or 227813 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 90207612 is about 9497.7687906160. The cubic root of 90207612 is about 448.4848001769.

It can be divided in two parts, 90 and 207612, that added together give a palindrome (207702).

The spelling of 90207612 in words is "ninety million, two hundred seven thousand, six hundred twelve".