90724368 has 80 divisors (see below), whose sum is σ = 271696896. Its totient is φ = 25549440.

The previous prime is 90724363. The next prime is 90724369. The reversal of 90724368 is 86342709.

It is not an unprimeable number, because it can be changed into a prime (90724363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21955 + ... + 25757.

Almost surely, 2^90724368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90724368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135848448).

90724368 is an abundant number, since it is smaller than the sum of its proper divisors (180972528).

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

90724368 is a wasteful number, since it uses less digits than its factorization.

90724368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 90724368 is about 9524.9340155195. The cubic root of 90724368 is about 449.3395546241.

The spelling of 90724368 in words is "ninety million, seven hundred twenty-four thousand, three hundred sixty-eight".