21714610 has 16 divisors (see below), whose sum is σ = 41385816. Its totient is φ = 8174848.

The previous prime is 21714607. The next prime is 21714617. The reversal of 21714610 is 1641712.

It can be written as a sum of positive squares in 4 ways, for example, as 13402921 + 8311689 = 3661^2 + 2883^2 .

It is not an unprimeable number, because it can be changed into a prime (21714617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63697 + ... + 64036.

Almost surely, 2^21714610 is an apocalyptic number.

21714610 is a deficient number, since it is larger than the sum of its proper divisors (19671206).

21714610 is a wasteful number, since it uses less digits than its factorization.

21714610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127757.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 21714610 is about 4659.8937756133. The cubic root of 21714610 is about 278.9870285118.

It can be divided in two parts, 217146 and 10, that added together give a square (217156 = 466²).

The spelling of 21714610 in words is "twenty-one million, seven hundred fourteen thousand, six hundred ten".