21714332 has 12 divisors (see below), whose sum is σ = 38146416. Its totient is φ = 10815360.

The previous prime is 21714317. The next prime is 21714337. The reversal of 21714332 is 23341712.

It is a junction number, because it is equal to n+sod(n) for n = 21714298 and 21714307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714337) 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 3 ways as a sum of consecutive naturals, for example, 9269 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (3178868).

Almost surely, 2^21714332 is an apocalyptic number.

It is an amenable number.

21714332 is a deficient number, since it is larger than the sum of its proper divisors (16432084).

21714332 is a wasteful number, since it uses less digits than its factorization.

21714332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20908 (or 20906 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 21714332 is about 4659.8639465117. The cubic root of 21714332 is about 278.9858379352.

The spelling of 21714332 in words is "twenty-one million, seven hundred fourteen thousand, three hundred thirty-two".