21822698 has 16 divisors (see below), whose sum is σ = 33904896. Its totient is φ = 10523520.

The previous prime is 21822683. The next prime is 21822707. The reversal of 21822698 is 89622812.

It is a Curzon number.

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, 32090 + ... + 32762.

It is an arithmetic number, because the mean of its divisors is an integer number (2119056).

Almost surely, 2^21822698 is an apocalyptic number.

21822698 is a deficient number, since it is larger than the sum of its proper divisors (12082198).

21822698 is a wasteful number, since it uses less digits than its factorization.

21822698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229.

The product of its digits is 27648, while the sum is 38.

The square root of 21822698 is about 4671.4770683372. The cubic root of 21822698 is about 279.4491636640.

The spelling of 21822698 in words is "twenty-one million, eight hundred twenty-two thousand, six hundred ninety-eight".