21426314 has 16 divisors (see below), whose sum is σ = 39556608. Its totient is φ = 8476272.

The previous prime is 21426289. The next prime is 21426329. The reversal of 21426314 is 41362412.

It is a self number, because there is not a number n which added to its sum of digits gives 21426314.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58682 + ... + 59045.

It is an arithmetic number, because the mean of its divisors is an integer number (2472288).

Almost surely, 2^21426314 is an apocalyptic number.

21426314 is a deficient number, since it is larger than the sum of its proper divisors (18130294).

21426314 is a wasteful number, since it uses less digits than its factorization.

21426314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117749.

The product of its digits is 1152, while the sum is 23.

The square root of 21426314 is about 4628.8566622871. The cubic root of 21426314 is about 277.7468582236.

Adding to 21426314 its reverse (41362412), we get a palindrome (62788726).

The spelling of 21426314 in words is "twenty-one million, four hundred twenty-six thousand, three hundred fourteen".