74431724 has 6 divisors (see below), whose sum is σ = 130255524. Its totient is φ = 37215860.

The previous prime is 74431699. The next prime is 74431739. The reversal of 74431724 is 42713447.

It is a super-2 number, since 2×74431724² = 11080163075224352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9303962 + ... + 9303969.

It is an arithmetic number, because the mean of its divisors is an integer number (21709254).

Almost surely, 2^74431724 is an apocalyptic number.

It is an amenable number.

74431724 is a deficient number, since it is larger than the sum of its proper divisors (55823800).

74431724 is a wasteful number, since it uses less digits than its factorization.

74431724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18607935 (or 18607933 counting only the distinct ones).

The product of its digits is 18816, while the sum is 32.

The square root of 74431724 is about 8627.3822217403. The cubic root of 74431724 is about 420.6485143763.

The spelling of 74431724 in words is "seventy-four million, four hundred thirty-one thousand, seven hundred twenty-four".