21314492 has 12 divisors (see below), whose sum is σ = 37489200. Its totient is φ = 10603296.

The previous prime is 21314473. The next prime is 21314497. The reversal of 21314492 is 29441312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314497) 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, 12593 + ... + 14184.

It is an arithmetic number, because the mean of its divisors is an integer number (3124100).

Almost surely, 2^21314492 is an apocalyptic number.

It is an amenable number.

21314492 is a deficient number, since it is larger than the sum of its proper divisors (16174708).

21314492 is a wasteful number, since it uses less digits than its factorization.

21314492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26980 (or 26978 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 21314492 is about 4616.7620688097. The cubic root of 21314492 is about 277.2628366232.

The spelling of 21314492 in words is "twenty-one million, three hundred fourteen thousand, four hundred ninety-two".