21714328 has 16 divisors (see below), whose sum is σ = 40767480. Its totient is φ = 10843008.

The previous prime is 21714317. The next prime is 21714337. The reversal of 21714328 is 82341712.

It is a junction number, because it is equal to n+sod(n) for n = 21714296 and 21714305.

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, 7776 + ... + 10192.

Almost surely, 2^21714328 is an apocalyptic number.

It is an amenable number.

21714328 is a deficient number, since it is larger than the sum of its proper divisors (19053152).

21714328 is a wasteful number, since it uses less digits than its factorization.

21714328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3542 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 21714328 is about 4659.8635173146. The cubic root of 21714328 is about 278.9858208045.

The spelling of 21714328 in words is "twenty-one million, seven hundred fourteen thousand, three hundred twenty-eight".