90012072 has 32 divisors (see below), whose sum is σ = 230266080. Its totient is φ = 29305920.

The previous prime is 90012067. The next prime is 90012077. The reversal of 90012072 is 27021009.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90012067) and next prime (90012077).

It is not an unprimeable number, because it can be changed into a prime (90012077) 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, 42579 + ... + 44642.

It is an arithmetic number, because the mean of its divisors is an integer number (7195815).

Almost surely, 2^90012072 is an apocalyptic number.

It is an amenable number.

90012072 is an abundant number, since it is smaller than the sum of its proper divisors (140254008).

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

90012072 is a wasteful number, since it uses less digits than its factorization.

90012072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87273 (or 87269 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 90012072 is about 9487.4692094362. The cubic root of 90012072 is about 448.1605106185.

The spelling of 90012072 in words is "ninety million, twelve thousand, seventy-two".