20983795 has 8 divisors (see below), whose sum is σ = 28777824. Its totient is φ = 14388864.

The previous prime is 20983789. The next prime is 20983799. The reversal of 20983795 is 59738902.

It is a happy number.

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

It is not a de Polignac number, because 20983795 - 2¹¹ = 20981747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20983799) by changing a digit.

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, 299734 + ... + 299803.

It is an arithmetic number, because the mean of its divisors is an integer number (3597228).

Almost surely, 2^20983795 is an apocalyptic number.

20983795 is a deficient number, since it is larger than the sum of its proper divisors (7794029).

20983795 is an equidigital number, since it uses as much as digits as its factorization.

20983795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599549.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 20983795 is about 4580.8072432706. The cubic root of 20983795 is about 275.8214337156.

The spelling of 20983795 in words is "twenty million, nine hundred eighty-three thousand, seven hundred ninety-five".