74231856 has 160 divisors (see below), whose sum is σ = 230461440. Its totient is φ = 22809600.

The previous prime is 74231831. The next prime is 74231867. The reversal of 74231856 is 65813247.

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 74231856.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307896 + ... + 308136.

It is an arithmetic number, because the mean of its divisors is an integer number (1440384).

Almost surely, 2^74231856 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 74231856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115230720).

74231856 is an abundant number, since it is smaller than the sum of its proper divisors (156229584).

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

74231856 is a wasteful number, since it uses less digits than its factorization.

74231856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 300 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 74231856 is about 8615.7910838181. The cubic root of 74231856 is about 420.2716609833.

The spelling of 74231856 in words is "seventy-four million, two hundred thirty-one thousand, eight hundred fifty-six".