90812724 has 24 divisors (see below), whose sum is σ = 212425920. Its totient is φ = 30195264.

The previous prime is 90812699. The next prime is 90812753. The reversal of 90812724 is 42721809.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 4344 + ... + 14159.

It is an arithmetic number, because the mean of its divisors is an integer number (8851080).

Almost surely, 2^90812724 is an apocalyptic number.

It is an amenable number.

90812724 is an abundant number, since it is smaller than the sum of its proper divisors (121613196).

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

90812724 is a wasteful number, since it uses less digits than its factorization.

90812724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18919 (or 18917 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 90812724 is about 9529.5710291702. The cubic root of 90812724 is about 449.4853771305.

The spelling of 90812724 in words is "ninety million, eight hundred twelve thousand, seven hundred twenty-four".