74432 has 14 divisors (see below), whose sum is σ = 147828. Its totient is φ = 37184.

The previous prime is 74419. The next prime is 74441. The reversal of 74432 is 23447.

It is a happy number.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 518 + ... + 645.

2⁷⁴⁴³² is an apocalyptic number.

It is an amenable number.

74432 is a deficient number, since it is larger than the sum of its proper divisors (73396).

74432 is a wasteful number, since it uses less digits than its factorization.

74432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1165 counting only the distinct ones).

The product of its digits is 672, while the sum is 20.

The square root of 74432 is about 272.8222864797. The cubic root of 74432 is about 42.0649034311.

Adding to 74432 its reverse (23447), we get a palindrome (97879).

The spelling of 74432 in words is "seventy-four thousand, four hundred thirty-two".