18256364 has 24 divisors (see below), whose sum is σ = 36637440. Its totient is φ = 7797456.

The previous prime is 18256363. The next prime is 18256367. The reversal of 18256364 is 46365281.

It is not an unprimeable number, because it can be changed into a prime (18256363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8777 + ... + 10655.

It is an arithmetic number, because the mean of its divisors is an integer number (1526560).

Almost surely, 2^18256364 is an apocalyptic number.

18256364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18256364 is an abundant number, since it is smaller than the sum of its proper divisors (18381076).

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

18256364 is a wasteful number, since it uses less digits than its factorization.

18256364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2235 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 18256364 is about 4272.7466575963. The cubic root of 18256364 is about 263.3124710635.

The spelling of 18256364 in words is "eighteen million, two hundred fifty-six thousand, three hundred sixty-four".