18408027 has 32 divisors (see below), whose sum is σ = 28385280. Its totient is φ = 10501920.

The previous prime is 18408023. The next prime is 18408037. The reversal of 18408027 is 72080481.

It is not a de Polignac number, because 18408027 - 2² = 18408023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18407985 and 18408003.

It is not an unprimeable number, because it can be changed into a prime (18408023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59808 + ... + 60114.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^18408027 is an apocalyptic number.

18408027 is a deficient number, since it is larger than the sum of its proper divisors (9977253).

18408027 is a wasteful number, since it uses less digits than its factorization.

18408027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 18408027 is about 4290.4576678951. The cubic root of 18408027 is about 264.0396089560.

The spelling of 18408027 in words is "eighteen million, four hundred eight thousand, twenty-seven".