21266314 has 16 divisors (see below), whose sum is σ = 32623200. Its totient is φ = 10394064.

The previous prime is 21266299. The next prime is 21266317. The reversal of 21266314 is 41366212.

It is a super-2 number, since 2×21266314² = 904512222293192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21266317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26629 + ... + 27415.

It is an arithmetic number, because the mean of its divisors is an integer number (2038950).

Almost surely, 2^21266314 is an apocalyptic number.

21266314 is a deficient number, since it is larger than the sum of its proper divisors (11356886).

21266314 is a wasteful number, since it uses less digits than its factorization.

21266314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077.

The product of its digits is 1728, while the sum is 25.

The square root of 21266314 is about 4611.5413909017. The cubic root of 21266314 is about 277.0537762632.

The spelling of 21266314 in words is "twenty-one million, two hundred sixty-six thousand, three hundred fourteen".