74427432 has 16 divisors (see below), whose sum is σ = 186068640. Its totient is φ = 24809136.

The previous prime is 74427403. The next prime is 74427433. The reversal of 74427432 is 23472447.

It is a super-2 number, since 2×74427432² = 11078885268229248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74427393 and 74427402.

It is not an unprimeable number, because it can be changed into a prime (74427433) 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 3 ways as a sum of consecutive naturals, for example, 1550548 + ... + 1550595.

It is an arithmetic number, because the mean of its divisors is an integer number (11629290).

Almost surely, 2^74427432 is an apocalyptic number.

It is an amenable number.

74427432 is an abundant number, since it is smaller than the sum of its proper divisors (111641208).

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

74427432 is a wasteful number, since it uses less digits than its factorization.

74427432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101152 (or 3101148 counting only the distinct ones).

The product of its digits is 37632, while the sum is 33.

The square root of 74427432 is about 8627.1334752628. The cubic root of 74427432 is about 420.6404288538.

Adding to 74427432 its reverse (23472447), we get a palindrome (97899879).

The spelling of 74427432 in words is "seventy-four million, four hundred twenty-seven thousand, four hundred thirty-two".