21095848 has 16 divisors (see below), whose sum is σ = 40000500. Its totient is φ = 10429056.

The previous prime is 21095839. The next prime is 21095849. The reversal of 21095848 is 84859012.

It can be written as a sum of positive squares in 2 ways, for example, as 20994724 + 101124 = 4582^2 + 318^2 .

It is not an unprimeable number, because it can be changed into a prime (21095849) by changing a digit.

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, 14103 + ... + 15526.

Almost surely, 2^21095848 is an apocalyptic number.

It is an amenable number.

21095848 is a deficient number, since it is larger than the sum of its proper divisors (18904652).

21095848 is a wasteful number, since it uses less digits than its factorization.

21095848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29724 (or 29720 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 21095848 is about 4593.0216633497. The cubic root of 21095848 is about 276.3115225069.

The spelling of 21095848 in words is "twenty-one million, ninety-five thousand, eight hundred forty-eight".