16889172 has 48 divisors (see below), whose sum is σ = 41244672. Its totient is φ = 5372640.

The previous prime is 16889161. The next prime is 16889179. The reversal of 16889172 is 27198861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30603 + ... + 31149.

It is an arithmetic number, because the mean of its divisors is an integer number (859264).

Almost surely, 2^16889172 is an apocalyptic number.

16889172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16889172 is an abundant number, since it is smaller than the sum of its proper divisors (24355500).

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

16889172 is a wasteful number, since it uses less digits than its factorization.

16889172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 666 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 16889172 is about 4109.6437801834. The cubic root of 16889172 is about 256.5681757000.

The spelling of 16889172 in words is "sixteen million, eight hundred eighty-nine thousand, one hundred seventy-two".