21707014 has 16 divisors (see below), whose sum is σ = 37274400. Its totient is φ = 9287424.

The previous prime is 21707003. The next prime is 21707041. The reversal of 21707014 is 41070712.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12172 + ... + 13840.

It is an arithmetic number, because the mean of its divisors is an integer number (2329650).

Almost surely, 2^21707014 is an apocalyptic number.

21707014 is a deficient number, since it is larger than the sum of its proper divisors (15567386).

21707014 is a wasteful number, since it uses less digits than its factorization.

21707014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 21707014 is about 4659.0786642855. The cubic root of 21707014 is about 278.9544938478.

Adding to 21707014 its reverse (41070712), we get a palindrome (62777726).

The spelling of 21707014 in words is "twenty-one million, seven hundred seven thousand, fourteen".