16624872 has 64 divisors (see below), whose sum is σ = 50385600. Its totient is φ = 5037120.

The previous prime is 16624841. The next prime is 16624889. The reversal of 16624872 is 27842661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (787275).

Almost surely, 2^16624872 is an apocalyptic number.

16624872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16624872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25192800).

16624872 is an abundant number, since it is smaller than the sum of its proper divisors (33760728).

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

16624872 is a wasteful number, since it uses less digits than its factorization.

16624872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7023 (or 7013 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 16624872 is about 4077.3609111777. The cubic root of 16624872 is about 255.2227810889. Note that the first 3 decimals are identical.

The spelling of 16624872 in words is "sixteen million, six hundred twenty-four thousand, eight hundred seventy-two".