74420016 has 80 divisors (see below), whose sum is σ = 222092928. Its totient is φ = 21222400.

The previous prime is 74420011. The next prime is 74420023. The reversal of 74420016 is 61002447.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (74420011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4831 + ... + 13121.

Almost surely, 2^74420016 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 74420016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111046464).

74420016 is an abundant number, since it is smaller than the sum of its proper divisors (147672912).

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

74420016 is a wasteful number, since it uses less digits than its factorization.

74420016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330 (or 8324 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 74420016 is about 8626.7036578290. The cubic root of 74420016 is about 420.6264574235.

Subtracting from 74420016 its reverse (61002447), we obtain a square (13417569 = 3663²).

The spelling of 74420016 in words is "seventy-four million, four hundred twenty thousand, sixteen".