74899520 has 112 divisors (see below), whose sum is σ = 191170560. Its totient is φ = 27869184.

The previous prime is 74899471. The next prime is 74899537. The reversal of 74899520 is 2599847.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589697 + ... + 589823.

It is an arithmetic number, because the mean of its divisors is an integer number (1706880).

Almost surely, 2^74899520 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 74899520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95585280).

74899520 is an abundant number, since it is smaller than the sum of its proper divisors (116271040).

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

74899520 is a wasteful number, since it uses less digits than its factorization.

74899520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 74899520 is about 8654.4508780165. The cubic root of 74899520 is about 421.5279193419.

The spelling of 74899520 in words is "seventy-four million, eight hundred ninety-nine thousand, five hundred twenty".