16624144 has 40 divisors (see below), whose sum is σ = 33510752. Its totient is φ = 7983360.

The previous prime is 16624133. The next prime is 16624177. The reversal of 16624144 is 44142661.

16624144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16624144³ (a number of 23 digits) contains 333 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50059 + ... + 50389.

Almost surely, 2^16624144 is an apocalyptic number.

It is an amenable number.

16624144 is an abundant number, since it is smaller than the sum of its proper divisors (16886608).

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

16624144 is a wasteful number, since it uses less digits than its factorization.

16624144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 449 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 16624144 is about 4077.2716367689. The cubic root of 16624144 is about 255.2190556487.

It can be divided in two parts, 166 and 24144, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 16624144 in words is "sixteen million, six hundred twenty-four thousand, one hundred forty-four".