20830793 has 4 divisors (see below), whose sum is σ = 20840400. Its totient is φ = 20821188.

The previous prime is 20830751. The next prime is 20830807. The reversal of 20830793 is 39703802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20830793 - 2¹² = 20826697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20830393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (5210100).

Almost surely, 2^20830793 is an apocalyptic number.

It is an amenable number.

20830793 is a deficient number, since it is larger than the sum of its proper divisors (9607).

20830793 is an equidigital number, since it uses as much as digits as its factorization.

20830793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9606.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20830793 is about 4564.0763578187. The cubic root of 20830793 is about 275.1494196255.

The spelling of 20830793 in words is "twenty million, eight hundred thirty thousand, seven hundred ninety-three".