16956457 has 4 divisors (see below), whose sum is σ = 19378816. Its totient is φ = 14534100.

The previous prime is 16956439. The next prime is 16956479. The reversal of 16956457 is 75465961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-16956457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16956437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211169 + ... + 1211182.

It is an arithmetic number, because the mean of its divisors is an integer number (4844704).

Almost surely, 2^16956457 is an apocalyptic number.

It is an amenable number.

16956457 is a deficient number, since it is larger than the sum of its proper divisors (2422359).

16956457 is an equidigital number, since it uses as much as digits as its factorization.

16956457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422358.

The product of its digits is 226800, while the sum is 43.

The square root of 16956457 is about 4117.8218757008. The cubic root of 16956457 is about 256.9084393769.

The spelling of 16956457 in words is "sixteen million, nine hundred fifty-six thousand, four hundred fifty-seven".