74304216 has 80 divisors (see below), whose sum is σ = 237866640. Its totient is φ = 21228480.

The previous prime is 74304199. The next prime is 74304247. The reversal of 74304216 is 61240347.

It is a super-2 number, since 2×74304216² = 11042233030749312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 74304216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3655 + ... + 12726.

It is an arithmetic number, because the mean of its divisors is an integer number (2973333).

Almost surely, 2^74304216 is an apocalyptic number.

It is an amenable number.

74304216 is an abundant number, since it is smaller than the sum of its proper divisors (163562424).

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

74304216 is a wasteful number, since it uses less digits than its factorization.

74304216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406 (or 16393 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 74304216 is about 8619.9893271396. The cubic root of 74304216 is about 420.4081746179.

The spelling of 74304216 in words is "seventy-four million, three hundred four thousand, two hundred sixteen".