74312224 has 72 divisors (see below), whose sum is σ = 172540368. Its totient is φ = 31409280.

The previous prime is 74312197. The next prime is 74312237. The reversal of 74312224 is 42221347.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129859 + ... + 130429.

It is an arithmetic number, because the mean of its divisors is an integer number (2396394).

Almost surely, 2^74312224 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 74312224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86270184).

74312224 is an abundant number, since it is smaller than the sum of its proper divisors (98228144).

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

74312224 is a wasteful number, since it uses less digits than its factorization.

74312224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 663 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 74312224 is about 8620.4538163603. The cubic root of 74312224 is about 420.4232769809.

The spelling of 74312224 in words is "seventy-four million, three hundred twelve thousand, two hundred twenty-four".