74394720 has 192 divisors, whose sum is σ = 275970240. Its totient is φ = 18653184.

The previous prime is 74394713. The next prime is 74394739. The reversal of 74394720 is 2749347.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72934 + ... + 73946.

It is an arithmetic number, because the mean of its divisors is an integer number (1437345).

Almost surely, 2^74394720 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 74394720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137985120).

74394720 is an abundant number, since it is smaller than the sum of its proper divisors (201575520).

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

74394720 is a wasteful number, since it uses less digits than its factorization.

74394720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 74394720 is about 8625.2373880375. The cubic root of 74394720 is about 420.5787938458.

The spelling of 74394720 in words is "seventy-four million, three hundred ninety-four thousand, seven hundred twenty".