74428516 has 24 divisors (see below), whose sum is σ = 139289976. Its totient is φ = 34675200.

The previous prime is 74428493. The next prime is 74428517. The reversal of 74428516 is 61582447.

It can be written as a sum of positive squares in 4 ways, for example, as 29484900 + 44943616 = 5430^2 + 6704^2 .

It is not an unprimeable number, because it can be changed into a prime (74428517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 12286.

It is an arithmetic number, because the mean of its divisors is an integer number (5803749).

Almost surely, 2^74428516 is an apocalyptic number.

It is an amenable number.

74428516 is a deficient number, since it is larger than the sum of its proper divisors (64861460).

74428516 is a wasteful number, since it uses less digits than its factorization.

74428516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959 (or 10957 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 74428516 is about 8627.1963000734. The cubic root of 74428516 is about 420.6424709862.

The spelling of 74428516 in words is "seventy-four million, four hundred twenty-eight thousand, five hundred sixteen".