74834816 has 80 divisors (see below), whose sum is σ = 181031640. Its totient is φ = 30185472.

The previous prime is 74834791. The next prime is 74834909. The reversal of 74834816 is 61843847.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4402040 + ... + 4402056.

Almost surely, 2^74834816 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 74834816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90515820).

74834816 is an abundant number, since it is smaller than the sum of its proper divisors (106196824).

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

74834816 is an frugal number, since it uses more digits than its factorization.

74834816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 26 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 74834816 is about 8650.7118782214. The cubic root of 74834816 is about 421.4065015624.

Multiplying 74834816 by its product of digits (129024), we get a square (9655487299584 = 3107328²).

The spelling of 74834816 in words is "seventy-four million, eight hundred thirty-four thousand, eight hundred sixteen".