16632644 has 12 divisors (see below), whose sum is σ = 33265344. Its totient is φ = 7128264.

The previous prime is 16632643. The next prime is 16632653. The reversal of 16632644 is 44623661.

16632644 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16632644.

It is not an unprimeable number, because it can be changed into a prime (16632643) 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, 296984 + ... + 297039.

It is an arithmetic number, because the mean of its divisors is an integer number (2772112).

Almost surely, 2^16632644 is an apocalyptic number.

16632644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16632644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16632644 is a wasteful number, since it uses less digits than its factorization.

16632644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594034 (or 594032 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 16632644 is about 4078.3138672741. The cubic root of 16632644 is about 255.2625464563.

The spelling of 16632644 in words is "sixteen million, six hundred thirty-two thousand, six hundred forty-four".