21320795 has 8 divisors (see below), whose sum is σ = 25615440. Its totient is φ = 17036320.

The previous prime is 21320749. The next prime is 21320801. The reversal of 21320795 is 59702312.

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

It is not a de Polignac number, because 21320795 - 2²² = 17126491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3296 + ... + 7314.

It is an arithmetic number, because the mean of its divisors is an integer number (3201930).

Almost surely, 2^21320795 is an apocalyptic number.

21320795 is a deficient number, since it is larger than the sum of its proper divisors (4294645).

21320795 is a wasteful number, since it uses less digits than its factorization.

21320795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 21320795 is about 4617.4446396248. Note that the first 3 decimals coincide. The cubic root of 21320795 is about 277.2901641246.

The spelling of 21320795 in words is "twenty-one million, three hundred twenty thousand, seven hundred ninety-five".