18022704 has 40 divisors (see below), whose sum is σ = 53210880. Its totient is φ = 5149248.

The previous prime is 18022691. The next prime is 18022727. The reversal of 18022704 is 40722081.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26484 + ... + 27155.

It is an arithmetic number, because the mean of its divisors is an integer number (1330272).

Almost surely, 2^18022704 is an apocalyptic number.

18022704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18022704 is an abundant number, since it is smaller than the sum of its proper divisors (35188176).

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

18022704 is a wasteful number, since it uses less digits than its factorization.

18022704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53657 (or 53651 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 18022704 is about 4245.3155359761. The cubic root of 18022704 is about 262.1842807415.

Adding to 18022704 its reverse (40722081), we get a palindrome (58744785).

The spelling of 18022704 in words is "eighteen million, twenty-two thousand, seven hundred four".