74863728 has 60 divisors (see below), whose sum is σ = 215192328. Its totient is φ = 24278400.

The previous prime is 74863697. The next prime is 74863741. The reversal of 74863728 is 82736847.

It is a happy number.

74863728 is a `hidden beast` number, since 7 + 4 + 8 + 637 + 2 + 8 = 666.

It is a congruent number.

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, 1698 + ... + 12353.

Almost surely, 2^74863728 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 74863728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107596164).

74863728 is an abundant number, since it is smaller than the sum of its proper divisors (140328600).

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

74863728 is a wasteful number, since it uses less digits than its factorization.

74863728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102 (or 14093 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 74863728 is about 8652.3827931963. The cubic root of 74863728 is about 421.4607638997.

The spelling of 74863728 in words is "seventy-four million, eight hundred sixty-three thousand, seven hundred twenty-eight".