18274252 has 24 divisors (see below), whose sum is σ = 34957440. Its totient is φ = 8321280.

The previous prime is 18274237. The next prime is 18274279. The reversal of 18274252 is 25247281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2227 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (1456560).

Almost surely, 2^18274252 is an apocalyptic number.

It is an amenable number.

18274252 is a deficient number, since it is larger than the sum of its proper divisors (16683188).

18274252 is a wasteful number, since it uses less digits than its factorization.

18274252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721 (or 8719 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 18274252 is about 4274.8394121885. The cubic root of 18274252 is about 263.3984428367.

The spelling of 18274252 in words is "eighteen million, two hundred seventy-four thousand, two hundred fifty-two".