90920704 has 72 divisors (see below), whose sum is σ = 209714400. Its totient is φ = 38535168.

The previous prime is 90920693. The next prime is 90920707. The reversal of 90920704 is 40702909.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90920707) 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, 202272 + ... + 202720.

It is an arithmetic number, because the mean of its divisors is an integer number (2912700).

Almost surely, 2^90920704 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 90920704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104857200).

90920704 is an abundant number, since it is smaller than the sum of its proper divisors (118793696).

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

90920704 is a wasteful number, since it uses less digits than its factorization.

90920704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 90920704 is about 9535.2348686333. The cubic root of 90920704 is about 449.6634586618.

The spelling of 90920704 in words is "ninety million, nine hundred twenty thousand, seven hundred four".