74820816 has 120 divisors (see below), whose sum is σ = 241155200. Its totient is φ = 21212928.

The previous prime is 74820799. The next prime is 74820827. The reversal of 74820816 is 61802847.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200406 + ... + 200778.

Almost surely, 2^74820816 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 74820816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120577600).

74820816 is an abundant number, since it is smaller than the sum of its proper divisors (166334384).

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

74820816 is a wasteful number, since it uses less digits than its factorization.

74820816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 74820816 is about 8649.9026584118. The cubic root of 74820816 is about 421.3802211968.

The spelling of 74820816 in words is "seventy-four million, eight hundred twenty thousand, eight hundred sixteen".