16517172 has 48 divisors (see below), whose sum is σ = 45473792. Its totient is φ = 4566240.

The previous prime is 16517161. The next prime is 16517173. The reversal of 16517172 is 27171561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16517173) 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, 568 + ... + 5775.

Almost surely, 2^16517172 is an apocalyptic number.

16517172 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 16517172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22736896).

16517172 is an abundant number, since it is smaller than the sum of its proper divisors (28956620).

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

16517172 is a wasteful number, since it uses less digits than its factorization.

16517172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388 (or 6386 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 16517172 is about 4064.1323797337. The cubic root of 16517172 is about 254.6704547314.

The spelling of 16517172 in words is "sixteen million, five hundred seventeen thousand, one hundred seventy-two".