21694322 has 16 divisors (see below), whose sum is σ = 35266560. Its totient is φ = 9949392.

The previous prime is 21694303. The next prime is 21694367. The reversal of 21694322 is 22349612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (2204160).

Almost surely, 2^21694322 is an apocalyptic number.

21694322 is a deficient number, since it is larger than the sum of its proper divisors (13572238).

21694322 is a wasteful number, since it uses less digits than its factorization.

21694322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297.

The product of its digits is 5184, while the sum is 29.

The square root of 21694322 is about 4657.7163932554. The cubic root of 21694322 is about 278.9001154075.

The spelling of 21694322 in words is "twenty-one million, six hundred ninety-four thousand, three hundred twenty-two".