90292631 has 16 divisors (see below), whose sum is σ = 109740960. Its totient is φ = 73153920.

The previous prime is 90292621. The next prime is 90292637. The reversal of 90292631 is 13629209.

It is a cyclic number.

It is not a de Polignac number, because 90292631 - 2⁶ = 90292567 is a prime.

It is a super-2 number, since 2×90292631² = 16305518425804322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90292637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6740 + ... + 15033.

It is an arithmetic number, because the mean of its divisors is an integer number (6858810).

Almost surely, 2^90292631 is an apocalyptic number.

90292631 is a deficient number, since it is larger than the sum of its proper divisors (19448329).

90292631 is a wasteful number, since it uses less digits than its factorization.

90292631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90292631 is about 9502.2434719386. The cubic root of 90292631 is about 448.6256521360.

The spelling of 90292631 in words is "ninety million, two hundred ninety-two thousand, six hundred thirty-one".