18016344 has 40 divisors (see below), whose sum is σ = 50464260. Its totient is φ = 6005232.

The previous prime is 18016333. The next prime is 18016391. The reversal of 18016344 is 44361081.

It is a super-2 number, since 2×18016344² = 649177302252672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13254 + ... + 14549.

Almost surely, 2^18016344 is an apocalyptic number.

It is an amenable number.

18016344 is an abundant number, since it is smaller than the sum of its proper divisors (32447916).

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

18016344 is a wasteful number, since it uses less digits than its factorization.

18016344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27821 (or 27808 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 18016344 is about 4244.5664089516. The cubic root of 18016344 is about 262.1534365313.

The spelling of 18016344 in words is "eighteen million, sixteen thousand, three hundred forty-four".