21365314 has 8 divisors (see below), whose sum is σ = 32293008. Its totient is φ = 10600980.

The previous prime is 21365303. The next prime is 21365347. The reversal of 21365314 is 41356312.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40512 + ... + 41035.

It is an arithmetic number, because the mean of its divisors is an integer number (4036626).

Almost surely, 2^21365314 is an apocalyptic number.

21365314 is a deficient number, since it is larger than the sum of its proper divisors (10927694).

21365314 is a wasteful number, since it uses less digits than its factorization.

21365314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81680.

The product of its digits is 2160, while the sum is 25.

The square root of 21365314 is about 4622.2628657401. The cubic root of 21365314 is about 277.4830290192.

The spelling of 21365314 in words is "twenty-one million, three hundred sixty-five thousand, three hundred fourteen".