18000744 has 32 divisors (see below), whose sum is σ = 45240000. Its totient is φ = 5968512.

The previous prime is 18000737. The next prime is 18000751. The reversal of 18000744 is 44700081.

It is an interprime number because it is at equal distance from previous prime (18000737) and next prime (18000751).

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

It is a congruent number.

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, 2892 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (1413750).

Almost surely, 2^18000744 is an apocalyptic number.

It is an amenable number.

18000744 is an abundant number, since it is smaller than the sum of its proper divisors (27239256).

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

18000744 is a wasteful number, since it uses less digits than its factorization.

18000744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977 (or 3973 counting only the distinct ones).

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

The square root of 18000744 is about 4242.7283674541. The cubic root of 18000744 is about 262.0777501704.

The spelling of 18000744 in words is "eighteen million, seven hundred forty-four", and thus it is an aban number.