21743714 has 32 divisors (see below), whose sum is σ = 36832320. Its totient is φ = 9566208.

The previous prime is 21743699. The next prime is 21743737. The reversal of 21743714 is 41734712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62489 + ... + 62835.

It is an arithmetic number, because the mean of its divisors is an integer number (1151010).

Almost surely, 2^21743714 is an apocalyptic number.

21743714 is a deficient number, since it is larger than the sum of its proper divisors (15088606).

21743714 is a wasteful number, since it uses less digits than its factorization.

21743714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 4704, while the sum is 29.

The square root of 21743714 is about 4663.0155479046. The cubic root of 21743714 is about 279.1116145794. Note that the first 3 decimals are identical.

The spelling of 21743714 in words is "twenty-one million, seven hundred forty-three thousand, seven hundred fourteen".