74092720 has 80 divisors (see below), whose sum is σ = 186988032. Its totient is φ = 27141120.

The previous prime is 74092693. The next prime is 74092747. The reversal of 74092720 is 2729047.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74092693) and next prime (74092747).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198454 + ... + 198826.

Almost surely, 2^74092720 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 74092720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93494016).

74092720 is an abundant number, since it is smaller than the sum of its proper divisors (112895312).

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

74092720 is a wasteful number, since it uses less digits than its factorization.

74092720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 74092720 is about 8607.7128204884. The cubic root of 74092720 is about 420.0089189338.

The spelling of 74092720 in words is "seventy-four million, ninety-two thousand, seven hundred twenty".