16266257 has 8 divisors (see below), whose sum is σ = 18814656. Its totient is φ = 13774032.

The previous prime is 16266253. The next prime is 16266269. The reversal of 16266257 is 75266261.

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 16266257 - 2² = 16266253 is a prime.

It is a super-2 number, since 2×16266257² = 529182233580098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16266251) 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, 13418 + ... + 14579.

It is an arithmetic number, because the mean of its divisors is an integer number (2351832).

Almost surely, 2^16266257 is an apocalyptic number.

It is an amenable number.

16266257 is a deficient number, since it is larger than the sum of its proper divisors (2548399).

16266257 is an equidigital number, since it uses as much as digits as its factorization.

16266257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28087.

The product of its digits is 30240, while the sum is 35.

The square root of 16266257 is about 4033.1448027563. The cubic root of 16266257 is about 253.3742891233.

The spelling of 16266257 in words is "sixteen million, two hundred sixty-six thousand, two hundred fifty-seven".