18272794 has 16 divisors (see below), whose sum is σ = 29328480. Its totient is φ = 8512560.

The previous prime is 18272791. The next prime is 18272803. The reversal of 18272794 is 49727281.

It is not an unprimeable number, because it can be changed into a prime (18272791) by changing a digit.

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, 1624 + ... + 6259.

It is an arithmetic number, because the mean of its divisors is an integer number (1833030).

Almost surely, 2^18272794 is an apocalyptic number.

18272794 is a deficient number, since it is larger than the sum of its proper divisors (11055686).

18272794 is a wasteful number, since it uses less digits than its factorization.

18272794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965.

The product of its digits is 56448, while the sum is 40.

The square root of 18272794 is about 4274.6688760651. The cubic root of 18272794 is about 263.3914376226.

The spelling of 18272794 in words is "eighteen million, two hundred seventy-two thousand, seven hundred ninety-four".