74197312 has 56 divisors (see below), whose sum is σ = 174101760. Its totient is φ = 30696960.

The previous prime is 74197309. The next prime is 74197363. The reversal of 74197312 is 21379147.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×74197312² = 11010482216050688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10137 + ... + 15847.

It is an arithmetic number, because the mean of its divisors is an integer number (3108960).

Almost surely, 2^74197312 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 74197312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87050880).

74197312 is an abundant number, since it is smaller than the sum of its proper divisors (99904448).

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

74197312 is a wasteful number, since it uses less digits than its factorization.

74197312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759 (or 5749 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 74197312 is about 8613.7861594075. The cubic root of 74197312 is about 420.2064593407.

The spelling of 74197312 in words is "seventy-four million, one hundred ninety-seven thousand, three hundred twelve".