74731218 has 32 divisors (see below), whose sum is σ = 166587840. Its totient is φ = 22210560.

The previous prime is 74731211. The next prime is 74731243. The reversal of 74731218 is 81213747.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74731211) 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 15 ways as a sum of consecutive naturals, for example, 17343 + ... + 21218.

It is an arithmetic number, because the mean of its divisors is an integer number (5205870).

Almost surely, 2^74731218 is an apocalyptic number.

74731218 is an abundant number, since it is smaller than the sum of its proper divisors (91856622).

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

74731218 is a wasteful number, since it uses less digits than its factorization.

74731218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38602.

The product of its digits is 9408, while the sum is 33.

The square root of 74731218 is about 8644.7219735513. The cubic root of 74731218 is about 421.2119529368.

The spelling of 74731218 in words is "seventy-four million, seven hundred thirty-one thousand, two hundred eighteen".