90312770 has 16 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 35962224.

The previous prime is 90312751. The next prime is 90312773. The reversal of 90312770 is 7721309.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90312773) 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, 18020 + ... + 22479.

It is an arithmetic number, because the mean of its divisors is an integer number (10206000).

Almost surely, 2^90312770 is an apocalyptic number.

90312770 is a deficient number, since it is larger than the sum of its proper divisors (72983230).

90312770 is a wasteful number, since it uses less digits than its factorization.

90312770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40729.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 90312770 is about 9503.3031099718. The cubic root of 90312770 is about 448.6590036963.

The spelling of 90312770 in words is "ninety million, three hundred twelve thousand, seven hundred seventy".