90290656 has 24 divisors (see below), whose sum is σ = 182566440. Its totient is φ = 43924608.

The previous prime is 90290653. The next prime is 90290671. The reversal of 90290656 is 65609209.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90290653) 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 3 ways as a sum of consecutive naturals, for example, 36946 + ... + 39313.

It is an arithmetic number, because the mean of its divisors is an integer number (7606935).

Almost surely, 2^90290656 is an apocalyptic number.

It is an amenable number.

90290656 is an abundant number, since it is smaller than the sum of its proper divisors (92275784).

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

90290656 is a wasteful number, since it uses less digits than its factorization.

90290656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76306 (or 76298 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 90290656 is about 9502.1395485438. The cubic root of 90290656 is about 448.6223811341.

The spelling of 90290656 in words is "ninety million, two hundred ninety thousand, six hundred fifty-six".