16624544 has 48 divisors (see below), whose sum is σ = 35431200. Its totient is φ = 7651584.

The previous prime is 16624541. The next prime is 16624567. The reversal of 16624544 is 44542661.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 16624544.

It is not an unprimeable number, because it can be changed into a prime (16624541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22127 + ... + 22865.

It is an arithmetic number, because the mean of its divisors is an integer number (738150).

Almost surely, 2^16624544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16624544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17715600).

16624544 is an abundant number, since it is smaller than the sum of its proper divisors (18806656).

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

16624544 is a wasteful number, since it uses less digits than its factorization.

16624544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 797 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 16624544 is about 4077.3206888838. The cubic root of 16624544 is about 255.2211026073.

The spelling of 16624544 in words is "sixteen million, six hundred twenty-four thousand, five hundred forty-four".