90423756 has 24 divisors (see below), whose sum is σ = 234432240. Its totient is φ = 30141216.

The previous prime is 90423721. The next prime is 90423763. The reversal of 90423756 is 65732409.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 90423756.

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 7 ways as a sum of consecutive naturals, for example, 418521 + ... + 418736.

It is an arithmetic number, because the mean of its divisors is an integer number (9768010).

Almost surely, 2^90423756 is an apocalyptic number.

It is an amenable number.

90423756 is an abundant number, since it is smaller than the sum of its proper divisors (144008484).

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

90423756 is a wasteful number, since it uses less digits than its factorization.

90423756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837270 (or 837262 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 90423756 is about 9509.1406551802. The cubic root of 90423756 is about 448.8427152000.

The spelling of 90423756 in words is "ninety million, four hundred twenty-three thousand, seven hundred fifty-six".