18327090 has 32 divisors (see below), whose sum is σ = 45899136. Its totient is φ = 4674560.

The previous prime is 18327061. The next prime is 18327091. The reversal of 18327090 is 9072381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18327091) 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, 12591 + ... + 13970.

It is an arithmetic number, because the mean of its divisors is an integer number (1434348).

Almost surely, 2^18327090 is an apocalyptic number.

18327090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18327090 is an abundant number, since it is smaller than the sum of its proper divisors (27572046).

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

18327090 is a wasteful number, since it uses less digits than its factorization.

18327090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26594.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 18327090 is about 4281.0150665467. The cubic root of 18327090 is about 263.6520611487.

The spelling of 18327090 in words is "eighteen million, three hundred twenty-seven thousand, ninety".