74199924 has 18 divisors (see below), whose sum is σ = 187561010. Its totient is φ = 24733296.

The previous prime is 74199919. The next prime is 74199941. The reversal of 74199924 is 42999147.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69056100 + 5143824 = 8310^2 + 2268^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 74199924.

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 5 ways as a sum of consecutive naturals, for example, 1030519 + ... + 1030590.

Almost surely, 2^74199924 is an apocalyptic number.

It is an amenable number.

74199924 is an abundant number, since it is smaller than the sum of its proper divisors (113361086).

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

74199924 is a wasteful number, since it uses less digits than its factorization.

74199924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061119 (or 2061114 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 74199924 is about 8613.9377754892. The cubic root of 74199924 is about 420.2113901860.

The spelling of 74199924 in words is "seventy-four million, one hundred ninety-nine thousand, nine hundred twenty-four".