21714712 has 16 divisors (see below), whose sum is σ = 43110360. Its totient is φ = 10218624.

The previous prime is 21714703. The next prime is 21714713. The reversal of 21714712 is 21741712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714713) 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, 79698 + ... + 79969.

Almost surely, 2^21714712 is an apocalyptic number.

It is an amenable number.

21714712 is a deficient number, since it is larger than the sum of its proper divisors (21395648).

21714712 is a wasteful number, since it uses less digits than its factorization.

21714712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159690 (or 159686 counting only the distinct ones).

The product of its digits is 784, while the sum is 25.

The square root of 21714712 is about 4659.9047200560. The cubic root of 21714712 is about 278.9874653396.

Subtracting 21714712 from its reverse (21741712), we obtain a cube (27000 = 30³).

The spelling of 21714712 in words is "twenty-one million, seven hundred fourteen thousand, seven hundred twelve".