21195092 has 12 divisors (see below), whose sum is σ = 37279200. Its totient is φ = 10543896.

The previous prime is 21195091. The next prime is 21195113. The reversal of 21195092 is 29059112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21195091) 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, 12518 + ... + 14109.

It is an arithmetic number, because the mean of its divisors is an integer number (3106600).

Almost surely, 2^21195092 is an apocalyptic number.

It is an amenable number.

21195092 is a deficient number, since it is larger than the sum of its proper divisors (16084108).

21195092 is a wasteful number, since it uses less digits than its factorization.

21195092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26830 (or 26828 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 21195092 is about 4603.8127676959. The cubic root of 21195092 is about 276.7441411390.

The spelling of 21195092 in words is "twenty-one million, one hundred ninety-five thousand, ninety-two".