16444816 has 20 divisors (see below), whose sum is σ = 33247872. Its totient is φ = 7864736.

The previous prime is 16444801. The next prime is 16444829. The reversal of 16444816 is 61844461.

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, 21976 + ... + 22711.

Almost surely, 2^16444816 is an apocalyptic number.

16444816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16444816 is an abundant number, since it is smaller than the sum of its proper divisors (16803056).

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

16444816 is a wasteful number, since it uses less digits than its factorization.

16444816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44718 (or 44712 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 16444816 is about 4055.2208324578. The cubic root of 16444816 is about 254.2980360866.

The spelling of 16444816 in words is "sixteen million, four hundred forty-four thousand, eight hundred sixteen".