21814708 has 12 divisors (see below), whose sum is σ = 38261440. Its totient is φ = 10882872.

The previous prime is 21814703. The next prime is 21814711. The reversal of 21814708 is 80741812.

It is a self number, because there is not a number n which added to its sum of digits gives 21814708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21814703) 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, 4038 + ... + 7741.

Almost surely, 2^21814708 is an apocalyptic number.

It is an amenable number.

21814708 is a deficient number, since it is larger than the sum of its proper divisors (16446732).

21814708 is a wasteful number, since it uses less digits than its factorization.

21814708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246 (or 12244 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 21814708 is about 4670.6218001461. The cubic root of 21814708 is about 279.4150543561.

It can be divided in two parts, 21814 and 708, that added together give a palindrome (22522).

The spelling of 21814708 in words is "twenty-one million, eight hundred fourteen thousand, seven hundred eight".