21969702 has 24 divisors (see below), whose sum is σ = 48314136. Its totient is φ = 7213536.

The previous prime is 21969691. The next prime is 21969709. The reversal of 21969702 is 20796912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21969709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7903 + ... + 10314.

It is an arithmetic number, because the mean of its divisors is an integer number (2013089).

Almost surely, 2^21969702 is an apocalyptic number.

21969702 is an abundant number, since it is smaller than the sum of its proper divisors (26344434).

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

21969702 is a wasteful number, since it uses less digits than its factorization.

21969702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18292 (or 18289 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 21969702 is about 4687.1848694072. The cubic root of 21969702 is about 280.0752433837.

The spelling of 21969702 in words is "twenty-one million, nine hundred sixty-nine thousand, seven hundred two".