74533431 has 16 divisors (see below), whose sum is σ = 113696000. Its totient is φ = 42545088.

The previous prime is 74533387. The next prime is 74533453. The reversal of 74533431 is 13433547.

It is not a de Polignac number, because 74533431 - 2⁹ = 74532919 is a prime.

It is a super-2 number, since 2×74533431² = 11110464673263522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74533231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34635 + ... + 36723.

It is an arithmetic number, because the mean of its divisors is an integer number (7106000).

Almost surely, 2^74533431 is an apocalyptic number.

74533431 is a deficient number, since it is larger than the sum of its proper divisors (39162569).

74533431 is a wasteful number, since it uses less digits than its factorization.

74533431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798.

The product of its digits is 15120, while the sum is 30.

The square root of 74533431 is about 8633.2746394401. The cubic root of 74533431 is about 420.8400251286.

Adding to 74533431 its reverse (13433547), we get a palindrome (87966978).

The spelling of 74533431 in words is "seventy-four million, five hundred thirty-three thousand, four hundred thirty-one".