90220792 has 8 divisors (see below), whose sum is σ = 169164000. Its totient is φ = 45110392.

The previous prime is 90220771. The next prime is 90220807. The reversal of 90220792 is 29702209.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5638792 + ... + 5638807.

It is an arithmetic number, because the mean of its divisors is an integer number (21145500).

Almost surely, 2^90220792 is an apocalyptic number.

It is an amenable number.

90220792 is a deficient number, since it is larger than the sum of its proper divisors (78943208).

90220792 is a wasteful number, since it uses less digits than its factorization.

90220792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277605 (or 11277601 counting only the distinct ones).

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

The square root of 90220792 is about 9498.4626124442. The cubic root of 90220792 is about 448.5066414298.

The spelling of 90220792 in words is "ninety million, two hundred twenty thousand, seven hundred ninety-two".