18844408 has 16 divisors (see below), whose sum is σ = 38545560. Its totient is φ = 8565600.

The previous prime is 18844393. The next prime is 18844411. The reversal of 18844408 is 80444881.

It is a super-2 number, since 2×18844408² = 710223425740928, which contains 22 as substring.

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, 106983 + ... + 107158.

Almost surely, 2^18844408 is an apocalyptic number.

It is an amenable number.

18844408 is an abundant number, since it is smaller than the sum of its proper divisors (19701152).

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

18844408 is a wasteful number, since it uses less digits than its factorization.

18844408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214158 (or 214154 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 18844408 is about 4341.0146279413. The cubic root of 18844408 is about 266.1097781191.

The spelling of 18844408 in words is "eighteen million, eight hundred forty-four thousand, four hundred eight".