74242724 has 6 divisors (see below), whose sum is σ = 129924774. Its totient is φ = 37121360.

The previous prime is 74242703. The next prime is 74242769. The reversal of 74242724 is 42724247.

It can be written as a sum of positive squares in only one way, i.e., 44649124 + 29593600 = 6682^2 + 5440^2 .

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 as a sum of consecutive naturals, namely, 9280337 + ... + 9280344.

It is an arithmetic number, because the mean of its divisors is an integer number (21654129).

Almost surely, 2^74242724 is an apocalyptic number.

It is an amenable number.

74242724 is a deficient number, since it is larger than the sum of its proper divisors (55682050).

74242724 is a wasteful number, since it uses less digits than its factorization.

74242724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18560685 (or 18560683 counting only the distinct ones).

The product of its digits is 25088, while the sum is 32.

The square root of 74242724 is about 8616.4217631219. The cubic root of 74242724 is about 420.2921701006.

The spelling of 74242724 in words is "seventy-four million, two hundred forty-two thousand, seven hundred twenty-four".