74728256 has 28 divisors (see below), whose sum is σ = 149615652. Its totient is φ = 37029888.

The previous prime is 74728237. The next prime is 74728267. The reversal of 74728256 is 65282747.

It can be written as a sum of positive squares in 2 ways, for example, as 22657600 + 52070656 = 4760^2 + 7216^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066 + ... + 12398.

Almost surely, 2^74728256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74728256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74807826).

74728256 is an abundant number, since it is smaller than the sum of its proper divisors (74887396).

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

74728256 is a wasteful number, since it uses less digits than its factorization.

74728256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458 (or 10448 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 74728256 is about 8644.5506534464. The cubic root of 74728256 is about 421.2063878984.

The spelling of 74728256 in words is "seventy-four million, seven hundred twenty-eight thousand, two hundred fifty-six".