21853714 has 8 divisors (see below), whose sum is σ = 32802048. Its totient is φ = 10919700.

The previous prime is 21853709. The next prime is 21853747. The reversal of 21853714 is 41735812.

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, 1939 + ... + 6889.

It is an arithmetic number, because the mean of its divisors is an integer number (4100256).

Almost surely, 2^21853714 is an apocalyptic number.

21853714 is a deficient number, since it is larger than the sum of its proper divisors (10948334).

21853714 is a wasteful number, since it uses less digits than its factorization.

21853714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160.

The product of its digits is 6720, while the sum is 31.

The square root of 21853714 is about 4674.7956105053. The cubic root of 21853714 is about 279.5814921270.

The spelling of 21853714 in words is "twenty-one million, eight hundred fifty-three thousand, seven hundred fourteen".