74477172 has 48 divisors (see below), whose sum is σ = 216663552. Its totient is φ = 19344480.

The previous prime is 74477167. The next prime is 74477201. The reversal of 74477172 is 27177447.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 74477172.

It is a congruent number.

It is an unprimeable number.

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, 39378 + ... + 41225.

It is an arithmetic number, because the mean of its divisors is an integer number (4513824).

Almost surely, 2^74477172 is an apocalyptic number.

It is an amenable number.

74477172 is an abundant number, since it is smaller than the sum of its proper divisors (142186380).

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

74477172 is a wasteful number, since it uses less digits than its factorization.

74477172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80628 (or 80626 counting only the distinct ones).

The product of its digits is 76832, while the sum is 39.

The square root of 74477172 is about 8630.0157589659. The cubic root of 74477172 is about 420.7341129307.

The spelling of 74477172 in words is "seventy-four million, four hundred seventy-seven thousand, one hundred seventy-two".