21714232 has 8 divisors (see below), whose sum is σ = 40714200. Its totient is φ = 10857112.

The previous prime is 21714223. The next prime is 21714233. The reversal of 21714232 is 23241712.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1357132 + ... + 1357147.

It is an arithmetic number, because the mean of its divisors is an integer number (5089275).

Almost surely, 2^21714232 is an apocalyptic number.

It is an amenable number.

21714232 is a deficient number, since it is larger than the sum of its proper divisors (18999968).

21714232 is a wasteful number, since it uses less digits than its factorization.

21714232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714285 (or 2714281 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 21714232 is about 4659.8532165724. The cubic root of 21714232 is about 278.9854096677.

Adding to 21714232 its reverse (23241712), we get a palindrome (44955944).

The spelling of 21714232 in words is "twenty-one million, seven hundred fourteen thousand, two hundred thirty-two".