21195082 has 8 divisors (see below), whose sum is σ = 32120676. Its totient is φ = 10488192.

The previous prime is 21195077. The next prime is 21195091. The reversal of 21195082 is 28059112.

It can be written as a sum of positive squares in 2 ways, for example, as 21058921 + 136161 = 4589^2 + 369^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21195082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54433 + ... + 54820.

Almost surely, 2^21195082 is an apocalyptic number.

21195082 is a deficient number, since it is larger than the sum of its proper divisors (10925594).

21195082 is a wasteful number, since it uses less digits than its factorization.

21195082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109352.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 21195082 is about 4603.8116816395. The cubic root of 21195082 is about 276.7440976157.

The spelling of 21195082 in words is "twenty-one million, one hundred ninety-five thousand, eighty-two".