90922788 has 54 divisors (see below), whose sum is σ = 252638022. Its totient is φ = 27551040.

The previous prime is 90922787. The next prime is 90922823. The reversal of 90922788 is 88722909.

It can be written as a sum of positive squares in only one way, i.e., 71368704 + 19554084 = 8448^2 + 4422^2 .

It is not an unprimeable number, because it can be changed into a prime (90922781) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6081 + ... + 14792.

Almost surely, 2^90922788 is an apocalyptic number.

It is an amenable number.

90922788 is an abundant number, since it is smaller than the sum of its proper divisors (161715234).

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

90922788 is a wasteful number, since it uses less digits than its factorization.

90922788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20905 (or 20889 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 90922788 is about 9535.3441469094. The cubic root of 90922788 is about 449.6668942250. Note that the first 3 decimals are identical.

The spelling of 90922788 in words is "ninety million, nine hundred twenty-two thousand, seven hundred eighty-eight".