74493218 has 18 divisors (see below), whose sum is σ = 119030961. Its totient is φ = 34957984.

The previous prime is 74493191. The next prime is 74493239. The reversal of 74493218 is 81239447.

It can be written as a sum of positive squares in 2 ways, for example, as 68178049 + 6315169 = 8257^2 + 2513^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6103.

It is a Duffinian number.

Its product of digits (48384) is a multiple of the sum of its prime divisors (378).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 207323 + ... + 207681.

Almost surely, 2^74493218 is an apocalyptic number.

74493218 is a deficient number, since it is larger than the sum of its proper divisors (44537743).

74493218 is an equidigital number, since it uses as much as digits as its factorization.

74493218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 378 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 74493218 is about 8630.9453711630. The cubic root of 74493218 is about 420.7643262816.

The spelling of 74493218 in words is "seventy-four million, four hundred ninety-three thousand, two hundred eighteen".