74399732 has 48 divisors (see below), whose sum is σ = 148176000. Its totient is φ = 32376960.

The previous prime is 74399729. The next prime is 74399737. The reversal of 74399732 is 23799347.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74399737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253778 + ... + 254070.

It is an arithmetic number, because the mean of its divisors is an integer number (3087000).

Almost surely, 2^74399732 is an apocalyptic number.

It is an amenable number.

74399732 is a deficient number, since it is larger than the sum of its proper divisors (73776268).

74399732 is a wasteful number, since it uses less digits than its factorization.

74399732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 534 counting only the distinct ones).

The product of its digits is 285768, while the sum is 44.

The square root of 74399732 is about 8625.5279258721. The cubic root of 74399732 is about 420.5882384837.

It can be divided in two parts, 7439 and 9732, that added together give a palindrome (17171).

The spelling of 74399732 in words is "seventy-four million, three hundred ninety-nine thousand, seven hundred thirty-two".