18047274 has 32 divisors (see below), whose sum is σ = 41955840. Its totient is φ = 5068272.

The previous prime is 18047273. The next prime is 18047287. The reversal of 18047274 is 47274081.

It is not an unprimeable number, because it can be changed into a prime (18047273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1164 + ... + 6119.

It is an arithmetic number, because the mean of its divisors is an integer number (1311120).

Almost surely, 2^18047274 is an apocalyptic number.

18047274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18047274 is an abundant number, since it is smaller than the sum of its proper divisors (23908566).

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

18047274 is a wasteful number, since it uses less digits than its factorization.

18047274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 18047274 is about 4248.2083282250. The cubic root of 18047274 is about 262.3033702084.

The spelling of 18047274 in words is "eighteen million, forty-seven thousand, two hundred seventy-four".