21714710 has 16 divisors (see below), whose sum is σ = 39144816. Its totient is φ = 8672928.

The previous prime is 21714703. The next prime is 21714713. The reversal of 21714710 is 1741712.

It is a super-3 number, since 3×21714710³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714713) 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, 8324 + ... + 10616.

It is an arithmetic number, because the mean of its divisors is an integer number (2446551).

Almost surely, 2^21714710 is an apocalyptic number.

21714710 is a deficient number, since it is larger than the sum of its proper divisors (17430106).

21714710 is a wasteful number, since it uses less digits than its factorization.

21714710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 21714710 is about 4659.9045054593. The cubic root of 21714710 is about 278.9874567743.

The spelling of 21714710 in words is "twenty-one million, seven hundred fourteen thousand, seven hundred ten".