74644328 has 32 divisors (see below), whose sum is σ = 153515520. Its totient is φ = 33744000.

The previous prime is 74644327. The next prime is 74644333. The reversal of 74644328 is 82344647.

It is a junction number, because it is equal to n+sod(n) for n = 74644291 and 74644300.

It is not an unprimeable number, because it can be changed into a prime (74644327) 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, 14588 + ... + 19028.

It is an arithmetic number, because the mean of its divisors is an integer number (4797360).

Almost surely, 2^74644328 is an apocalyptic number.

It is an amenable number.

74644328 is an abundant number, since it is smaller than the sum of its proper divisors (78871192).

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

74644328 is a wasteful number, since it uses less digits than its factorization.

74644328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649 (or 4645 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 74644328 is about 8639.6949020206. The cubic root of 74644328 is about 421.0486418898.

The spelling of 74644328 in words is "seventy-four million, six hundred forty-four thousand, three hundred twenty-eight".