90785424 has 40 divisors (see below), whose sum is σ = 238511520. Its totient is φ = 29747968.

The previous prime is 90785419. The next prime is 90785459. The reversal of 90785424 is 42458709.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13197 + ... + 18860.

It is an arithmetic number, because the mean of its divisors is an integer number (5962788).

Almost surely, 2^90785424 is an apocalyptic number.

It is an amenable number.

90785424 is an abundant number, since it is smaller than the sum of its proper divisors (147726096).

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

90785424 is a wasteful number, since it uses less digits than its factorization.

90785424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32127 (or 32121 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 90785424 is about 9528.1385380356. The cubic root of 90785424 is about 449.4403313847.

It can be divided in two parts, 907854 and 24, that added together give a triangular number (907878 = T₁₃₄₇).

The spelling of 90785424 in words is "ninety million, seven hundred eighty-five thousand, four hundred twenty-four".