16881172 has 48 divisors (see below), whose sum is σ = 38449152. Its totient is φ = 6288480.

The previous prime is 16881169. The next prime is 16881191. The reversal of 16881172 is 27118861.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 5893 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (801024).

Almost surely, 2^16881172 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 16881172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19224576).

16881172 is an abundant number, since it is smaller than the sum of its proper divisors (21567980).

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

16881172 is a wasteful number, since it uses less digits than its factorization.

16881172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2426 counting only the distinct ones).

The product of its digits is 5376, while the sum is 34.

The square root of 16881172 is about 4108.6703445275. The cubic root of 16881172 is about 256.5276592166.

It can be divided in two parts, 16 and 881172, that added together give a palindrome (881188).

The spelling of 16881172 in words is "sixteen million, eight hundred eighty-one thousand, one hundred seventy-two".