16218044 has 12 divisors (see below), whose sum is σ = 28455168. Its totient is φ = 8088000.

The previous prime is 16218043. The next prime is 16218049. The reversal of 16218044 is 44081261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3452 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (2371264).

Almost surely, 2^16218044 is an apocalyptic number.

It is an amenable number.

16218044 is a deficient number, since it is larger than the sum of its proper divisors (12237124).

16218044 is a wasteful number, since it uses less digits than its factorization.

16218044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10516 (or 10514 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 16218044 is about 4027.1632695981. The cubic root of 16218044 is about 253.1237085541.

The spelling of 16218044 in words is "sixteen million, two hundred eighteen thousand, forty-four".