74644944 has 80 divisors (see below), whose sum is σ = 212456640. Its totient is φ = 22394880.

The previous prime is 74644937. The next prime is 74644949. The reversal of 74644944 is 44944647.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74644896 and 74644905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74644949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56904 + ... + 58200.

It is an arithmetic number, because the mean of its divisors is an integer number (2655708).

Almost surely, 2^74644944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74644944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106228320).

74644944 is an abundant number, since it is smaller than the sum of its proper divisors (137811696).

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

74644944 is a wasteful number, since it uses less digits than its factorization.

74644944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1422 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 74644944 is about 8639.7305513540. The cubic root of 74644944 is about 421.0498001169.

The spelling of 74644944 in words is "seventy-four million, six hundred forty-four thousand, nine hundred forty-four".