18256632 has 16 divisors (see below), whose sum is σ = 45641640. Its totient is φ = 6085536.

The previous prime is 18256561. The next prime is 18256649. The reversal of 18256632 is 23665281.

It is a super-2 number, since 2×18256632² = 666609223966848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18256593 and 18256602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380323 + ... + 380370.

Almost surely, 2^18256632 is an apocalyptic number.

18256632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18256632 is an abundant number, since it is smaller than the sum of its proper divisors (27385008).

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

18256632 is a wasteful number, since it uses less digits than its factorization.

18256632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760702 (or 760698 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 18256632 is about 4272.7780190410. The cubic root of 18256632 is about 263.3137595164.

The spelling of 18256632 in words is "eighteen million, two hundred fifty-six thousand, six hundred thirty-two".