16972117 has 8 divisors (see below), whose sum is σ = 17330400. Its totient is φ = 16616304.

The previous prime is 16972093. The next prime is 16972129. The reversal of 16972117 is 71127961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16972117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16972157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20059 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (2166300).

Almost surely, 2^16972117 is an apocalyptic number.

It is an amenable number.

16972117 is a deficient number, since it is larger than the sum of its proper divisors (358283).

16972117 is an equidigital number, since it uses as much as digits as its factorization.

16972117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its digits is 5292, while the sum is 34.

The square root of 16972117 is about 4119.7229275766. The cubic root of 16972117 is about 256.9875036190.

The spelling of 16972117 in words is "sixteen million, nine hundred seventy-two thousand, one hundred seventeen".