74325720 has 128 divisors (see below), whose sum is σ = 268300800. Its totient is φ = 16091136.

The previous prime is 74325709. The next prime is 74325721. The reversal of 74325720 is 2752347.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74325721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13632 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (2096100).

Almost surely, 2^74325720 is an apocalyptic number.

74325720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74325720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134150400).

74325720 is an abundant number, since it is smaller than the sum of its proper divisors (193975080).

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

74325720 is a wasteful number, since it uses less digits than its factorization.

74325720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697 (or 4693 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 74325720 is about 8621.2365702375. The cubic root of 74325720 is about 420.4487267601.

The spelling of 74325720 in words is "seventy-four million, three hundred twenty-five thousand, seven hundred twenty".