90236572 has 24 divisors (see below), whose sum is σ = 162217440. Its totient is φ = 43895040.

The previous prime is 90236563. The next prime is 90236579. The reversal of 90236572 is 27563209.

It is a happy number.

It is a super-2 number, since 2×90236572² = 16285277852622368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90236579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92833 + ... + 93799.

It is an arithmetic number, because the mean of its divisors is an integer number (6759060).

Almost surely, 2^90236572 is an apocalyptic number.

It is an amenable number.

90236572 is a deficient number, since it is larger than the sum of its proper divisors (71980868).

90236572 is a wasteful number, since it uses less digits than its factorization.

90236572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 90236572 is about 9499.2932368677. The cubic root of 90236572 is about 448.5327884781.

The spelling of 90236572 in words is "ninety million, two hundred thirty-six thousand, five hundred seventy-two".