74304432 has 40 divisors (see below), whose sum is σ = 213282480. Its totient is φ = 24768000.

The previous prime is 74304413. The next prime is 74304449. The reversal of 74304432 is 23440347.

It is a super-2 number, since 2×74304432² = 11042297229685248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 74304396 and 74304405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85569 + ... + 86432.

It is an arithmetic number, because the mean of its divisors is an integer number (5332062).

Almost surely, 2^74304432 is an apocalyptic number.

74304432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

74304432 is an abundant number, since it is smaller than the sum of its proper divisors (138978048).

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

74304432 is a wasteful number, since it uses less digits than its factorization.

74304432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172018 (or 172006 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 74304432 is about 8620.0018561483. The cubic root of 74304432 is about 420.4085819886.

Adding to 74304432 its reverse (23440347), we get a palindrome (97744779).

The spelling of 74304432 in words is "seventy-four million, three hundred four thousand, four hundred thirty-two".