90220704 has 48 divisors (see below), whose sum is σ = 270664128. Its totient is φ = 25777152.

The previous prime is 90220703. The next prime is 90220709. The reversal of 90220704 is 40702209.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (90220703) 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, 66457 + ... + 67800.

It is an arithmetic number, because the mean of its divisors is an integer number (5638836).

Almost surely, 2^90220704 is an apocalyptic number.

It is an amenable number.

90220704 is an abundant number, since it is smaller than the sum of its proper divisors (180443424).

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

90220704 is a wasteful number, since it uses less digits than its factorization.

90220704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134277 (or 134269 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 90220704 is about 9498.4579801145. The cubic root of 90220704 is about 448.5064956076.

The spelling of 90220704 in words is "ninety million, two hundred twenty thousand, seven hundred four".