21714324 has 12 divisors (see below), whose sum is σ = 50666784. Its totient is φ = 7238104.

The previous prime is 21714317. The next prime is 21714337. The reversal of 21714324 is 42341712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21714294 and 21714303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904752 + ... + 904775.

It is an arithmetic number, because the mean of its divisors is an integer number (4222232).

Almost surely, 2^21714324 is an apocalyptic number.

It is an amenable number.

21714324 is an abundant number, since it is smaller than the sum of its proper divisors (28952460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21714324 is a wasteful number, since it uses less digits than its factorization.

21714324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809534 (or 1809532 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 21714324 is about 4659.8630881175. The cubic root of 21714324 is about 278.9858036738.

It can be divided in two parts, 217 and 14324, that added together give a palindrome (14541).

The spelling of 21714324 in words is "twenty-one million, seven hundred fourteen thousand, three hundred twenty-four".