21896822 has 8 divisors (see below), whose sum is σ = 33733056. Its totient is φ = 10652472.

The previous prime is 21896803. The next prime is 21896843. The reversal of 21896822 is 22869812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147878 + ... + 148025.

It is an arithmetic number, because the mean of its divisors is an integer number (4216632).

Almost surely, 2^21896822 is an apocalyptic number.

21896822 is a deficient number, since it is larger than the sum of its proper divisors (11836234).

21896822 is a wasteful number, since it uses less digits than its factorization.

21896822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295942.

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

The square root of 21896822 is about 4679.4040218814. The cubic root of 21896822 is about 279.7652028231.

The spelling of 21896822 in words is "twenty-one million, eight hundred ninety-six thousand, eight hundred twenty-two".