21194882 has 12 divisors (see below), whose sum is σ = 32929026. Its totient is φ = 10231200.

The previous prime is 21194879. The next prime is 21194933. The reversal of 21194882 is 28849112.

It can be written as a sum of positive squares in 3 ways, for example, as 17230801 + 3964081 = 4151^2 + 1991^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4619 + ... + 7982.

Almost surely, 2^21194882 is an apocalyptic number.

21194882 is a deficient number, since it is larger than the sum of its proper divisors (11734144).

21194882 is a wasteful number, since it uses less digits than its factorization.

21194882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661 (or 12632 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 21194882 is about 4603.7899604565. The cubic root of 21194882 is about 276.7432271466.

The spelling of 21194882 in words is "twenty-one million, one hundred ninety-four thousand, eight hundred eighty-two".