90732945 has 16 divisors (see below), whose sum is σ = 146220480. Its totient is φ = 48041664.

The previous prime is 90732883. The next prime is 90732989. The reversal of 90732945 is 54923709.

It is a de Polignac number, because none of the positive numbers 2^k-90732945 is a prime.

It is an unprimeable number.

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, 19674 + ... + 23843.

It is an arithmetic number, because the mean of its divisors is an integer number (9138780).

Almost surely, 2^90732945 is an apocalyptic number.

It is an amenable number.

90732945 is a deficient number, since it is larger than the sum of its proper divisors (55487535).

90732945 is a wasteful number, since it uses less digits than its factorization.

90732945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43664.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 90732945 is about 9525.3842442182. The cubic root of 90732945 is about 449.3537142301.

The spelling of 90732945 in words is "ninety million, seven hundred thirty-two thousand, nine hundred forty-five".