18274404 has 24 divisors (see below), whose sum is σ = 42837760. Its totient is φ = 6063264.

The previous prime is 18274387. The next prime is 18274433. The reversal of 18274404 is 40447281.

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 7 ways as a sum of consecutive naturals, for example, 739 + ... + 6090.

Almost surely, 2^18274404 is an apocalyptic number.

It is an amenable number.

18274404 is an abundant number, since it is smaller than the sum of its proper divisors (24563356).

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

18274404 is a wasteful number, since it uses less digits than its factorization.

18274404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7057 counting only the distinct ones).

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

The square root of 18274404 is about 4274.8571905971. The cubic root of 18274404 is about 263.3991731256.

The spelling of 18274404 in words is "eighteen million, two hundred seventy-four thousand, four hundred four".