21893714 has 8 divisors (see below), whose sum is σ = 33728268. Its totient is φ = 10650960.

The previous prime is 21893699. The next prime is 21893747. The reversal of 21893714 is 41739812.

It can be written as a sum of positive squares in 2 ways, for example, as 21464689 + 429025 = 4633^2 + 655^2 .

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

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, 147857 + ... + 148004.

Almost surely, 2^21893714 is an apocalyptic number.

21893714 is a deficient number, since it is larger than the sum of its proper divisors (11834554).

21893714 is a wasteful number, since it uses less digits than its factorization.

21893714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295900.

The product of its digits is 12096, while the sum is 35.

The square root of 21893714 is about 4679.0719165236. The cubic root of 21893714 is about 279.7519657212.

The spelling of 21893714 in words is "twenty-one million, eight hundred ninety-three thousand, seven hundred fourteen".