90424 has 16 divisors (see below), whose sum is σ = 172800. Its totient is φ = 44352.

The previous prime is 90407. The next prime is 90437. The reversal of 90424 is 42409.

90424 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (10800).

2⁹⁰⁴²⁴ is an apocalyptic number.

It is an amenable number.

90424 is a deficient number, since it is larger than the sum of its proper divisors (82376).

90424 is a wasteful number, since it uses less digits than its factorization.

90424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 90424 is about 300.7058363251. The cubic root of 90424 is about 44.8843118920.

The spelling of 90424 in words is "ninety thousand, four hundred twenty-four".