21338714 has 8 divisors (see below), whose sum is σ = 32873268. Its totient is φ = 10380960.

The previous prime is 21338683. The next prime is 21338717. The reversal of 21338714 is 41783312.

It can be written as a sum of positive squares in 2 ways, for example, as 16949689 + 4389025 = 4117^2 + 2095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21338717) 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, 144107 + ... + 144254.

Almost surely, 2^21338714 is an apocalyptic number.

21338714 is a deficient number, since it is larger than the sum of its proper divisors (11534554).

21338714 is a wasteful number, since it uses less digits than its factorization.

21338714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288400.

The product of its digits is 4032, while the sum is 29.

The square root of 21338714 is about 4619.3845910467. The cubic root of 21338714 is about 277.3678249420.

The spelling of 21338714 in words is "twenty-one million, three hundred thirty-eight thousand, seven hundred fourteen".