74473644 has 24 divisors (see below), whose sum is σ = 198596608. Its totient is φ = 21278160.

The previous prime is 74473643. The next prime is 74473657. The reversal of 74473644 is 44637447.

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

It is not an unprimeable number, because it can be changed into a prime (74473643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443212 + ... + 443379.

Almost surely, 2^74473644 is an apocalyptic number.

It is an amenable number.

74473644 is an abundant number, since it is smaller than the sum of its proper divisors (124122964).

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

74473644 is a wasteful number, since it uses less digits than its factorization.

74473644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886605 (or 886603 counting only the distinct ones).

The product of its digits is 225792, while the sum is 39.

The square root of 74473644 is about 8629.8113536740. The cubic root of 74473644 is about 420.7274694033.

The spelling of 74473644 in words is "seventy-four million, four hundred seventy-three thousand, six hundred forty-four".