16972913 has 8 divisors (see below), whose sum is σ = 17297280. Its totient is φ = 16651440.

The previous prime is 16972889. The next prime is 16972931. The reversal of 16972913 is 31927961.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16972913 - 2¹² = 16968817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16972993) 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, 13706 + ... + 14892.

It is an arithmetic number, because the mean of its divisors is an integer number (2162160).

Almost surely, 2^16972913 is an apocalyptic number.

It is an amenable number.

16972913 is a deficient number, since it is larger than the sum of its proper divisors (324367).

16972913 is a wasteful number, since it uses less digits than its factorization.

16972913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447.

The product of its digits is 20412, while the sum is 38.

The square root of 16972913 is about 4119.8195348826. The cubic root of 16972913 is about 256.9915211665.

The spelling of 16972913 in words is "sixteen million, nine hundred seventy-two thousand, nine hundred thirteen".