74945216 has 56 divisors (see below), whose sum is σ = 154161744. Its totient is φ = 36126720.

The previous prime is 74945203. The next prime is 74945219. The reversal of 74945216 is 61254947.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74945216.

It is not an unprimeable number, because it can be changed into a prime (74945219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310856 + ... + 311096.

Almost surely, 2^74945216 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 74945216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77080872).

74945216 is an abundant number, since it is smaller than the sum of its proper divisors (79216528).

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

74945216 is a wasteful number, since it uses less digits than its factorization.

74945216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 399 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 74945216 is about 8657.0905043207. The cubic root of 74945216 is about 421.6136262724.

The spelling of 74945216 in words is "seventy-four million, nine hundred forty-five thousand, two hundred sixteen".