74228256 has 72 divisors (see below), whose sum is σ = 223518204. Its totient is φ = 23285760.

The previous prime is 74228243. The next prime is 74228267. The reversal of 74228256 is 65282247.

It can be written as a sum of positive squares in 2 ways, for example, as 71978256 + 2250000 = 8484^2 + 1500^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 74228256.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2685 + ... + 12476.

Almost surely, 2^74228256 is an apocalyptic number.

It is an amenable number.

74228256 is an abundant number, since it is smaller than the sum of its proper divisors (149289948).

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

74228256 is a wasteful number, since it uses less digits than its factorization.

74228256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194 (or 15183 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 74228256 is about 8615.5821625703. The cubic root of 74228256 is about 420.2648669440.

The spelling of 74228256 in words is "seventy-four million, two hundred twenty-eight thousand, two hundred fifty-six".