21293795 has 8 divisors (see below), whose sum is σ = 25651296. Its totient is φ = 16969216.

The previous prime is 21293777. The next prime is 21293803. The reversal of 21293795 is 59739212.

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

It is a cyclic number.

It is not a de Polignac number, because 21293795 - 2¹⁰ = 21292771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6782 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (3206412).

Almost surely, 2^21293795 is an apocalyptic number.

21293795 is a deficient number, since it is larger than the sum of its proper divisors (4357501).

21293795 is a wasteful number, since it uses less digits than its factorization.

21293795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16461.

The product of its digits is 34020, while the sum is 38.

The square root of 21293795 is about 4614.5200183768. The cubic root of 21293795 is about 277.1730640974.

The spelling of 21293795 in words is "twenty-one million, two hundred ninety-three thousand, seven hundred ninety-five".