21314372 has 12 divisors (see below), whose sum is σ = 37341696. Its totient is φ = 10645320.

The previous prime is 21314357. The next prime is 21314387. The reversal of 21314372 is 27341312.

21314372 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (21314357) and next prime (21314387).

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1997 + ... + 6827.

It is an arithmetic number, because the mean of its divisors is an integer number (3111808).

Almost surely, 2^21314372 is an apocalyptic number.

It is an amenable number.

21314372 is a deficient number, since it is larger than the sum of its proper divisors (16027324).

21314372 is a wasteful number, since it uses less digits than its factorization.

21314372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938 (or 5936 counting only the distinct ones).

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

The square root of 21314372 is about 4616.7490726701. The cubic root of 21314372 is about 277.2623162949.

Adding to 21314372 its reverse (27341312), we get a palindrome (48655684).

The spelling of 21314372 in words is "twenty-one million, three hundred fourteen thousand, three hundred seventy-two".