21714522 has 16 divisors (see below), whose sum is σ = 43651872. Its totient is φ = 7201040.

The previous prime is 21714521. The next prime is 21714529. The reversal of 21714522 is 22541712.

It is a junction number, because it is equal to n+sod(n) for n = 21714492 and 21714501.

It is not an unprimeable number, because it can be changed into a prime (21714521) 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, 8004 + ... + 10367.

It is an arithmetic number, because the mean of its divisors is an integer number (2728242).

Almost surely, 2^21714522 is an apocalyptic number.

21714522 is an abundant number, since it is smaller than the sum of its proper divisors (21937350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21714522 is a wasteful number, since it uses less digits than its factorization.

21714522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18573.

The product of its digits is 1120, while the sum is 24.

The square root of 21714522 is about 4659.8843333285. The cubic root of 21714522 is about 278.9866516397.

The spelling of 21714522 in words is "twenty-one million, seven hundred fourteen thousand, five hundred twenty-two".