74442180 has 24 divisors (see below), whose sum is σ = 208438272. Its totient is φ = 19851232.

The previous prime is 74442161. The next prime is 74442197. The reversal of 74442180 is 8124447.

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

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, 620292 + ... + 620411.

It is an arithmetic number, because the mean of its divisors is an integer number (8684928).

Almost surely, 2^74442180 is an apocalyptic number.

It is an amenable number.

74442180 is an abundant number, since it is smaller than the sum of its proper divisors (133996092).

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

74442180 is a wasteful number, since it uses less digits than its factorization.

74442180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240715 (or 1240713 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 74442180 is about 8627.9881780169. The cubic root of 74442180 is about 420.6682107042.

It can be divided in two parts, 744 and 42180, that added together give a palindrome (42924).

The spelling of 74442180 in words is "seventy-four million, four hundred forty-two thousand, one hundred eighty".