74339980 has 144 divisors (see below), whose sum is σ = 197074080. Its totient is φ = 23316480.

The previous prime is 74339977. The next prime is 74339981. The reversal of 74339980 is 8993347.

It is not an unprimeable number, because it can be changed into a prime (74339981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 534751 + ... + 534889.

It is an arithmetic number, because the mean of its divisors is an integer number (1368570).

Almost surely, 2^74339980 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 74339980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98537040).

74339980 is an abundant number, since it is smaller than the sum of its proper divisors (122734100).

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

74339980 is a wasteful number, since it uses less digits than its factorization.

74339980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 74339980 is about 8622.0635581049. The cubic root of 74339980 is about 420.4756138882.

The spelling of 74339980 in words is "seventy-four million, three hundred thirty-nine thousand, nine hundred eighty".