74398824 has 56 divisors (see below), whose sum is σ = 209167410. Its totient is φ = 24797664.

The previous prime is 74398781. The next prime is 74398843. The reversal of 74398824 is 42889347.

It can be written as a sum of positive squares in only one way, i.e., 61308900 + 13089924 = 7830^2 + 3618^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74398824.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 547 + ... + 12210.

Almost surely, 2^74398824 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 74398824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104583705).

74398824 is an abundant number, since it is smaller than the sum of its proper divisors (134768586).

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

74398824 is a wasteful number, since it uses less digits than its factorization.

74398824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12781 (or 12762 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 74398824 is about 8625.4752912521. The cubic root of 74398824 is about 420.5865274754.

The spelling of 74398824 in words is "seventy-four million, three hundred ninety-eight thousand, eight hundred twenty-four".