21095194 has 8 divisors (see below), whose sum is σ = 31802400. Its totient is φ = 10494396.

The previous prime is 21095177. The next prime is 21095201. The reversal of 21095194 is 49159012.

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

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, 26104 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (3975300).

Almost surely, 2^21095194 is an apocalyptic number.

21095194 is a deficient number, since it is larger than the sum of its proper divisors (10707206).

21095194 is a wasteful number, since it uses less digits than its factorization.

21095194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53204.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 21095194 is about 4592.9504678366. The cubic root of 21095194 is about 276.3086671330.

The spelling of 21095194 in words is "twenty-one million, ninety-five thousand, one hundred ninety-four".