21713714 has 16 divisors (see below), whose sum is σ = 35604576. Its totient is φ = 9849600.

The previous prime is 21713707. The next prime is 21713737. The reversal of 21713714 is 41731712.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17234 + ... + 18450.

It is an arithmetic number, because the mean of its divisors is an integer number (2225286).

Almost surely, 2^21713714 is an apocalyptic number.

21713714 is a deficient number, since it is larger than the sum of its proper divisors (13890862).

21713714 is a wasteful number, since it uses less digits than its factorization.

21713714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its digits is 1176, while the sum is 26.

The square root of 21713714 is about 4659.7976350910. The cubic root of 21713714 is about 278.9831912211.

It can be divided in two parts, 2171 and 3714, that added together give a palindrome (5885).

The spelling of 21713714 in words is "twenty-one million, seven hundred thirteen thousand, seven hundred fourteen".