20834807 has 4 divisors (see below), whose sum is σ = 23811216. Its totient is φ = 17858400.

The previous prime is 20834797. The next prime is 20834813. The reversal of 20834807 is 70843802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70843802 = 2 ⋅35421901.

It is not a de Polignac number, because 20834807 - 2⁸ = 20834551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830807) 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, 1488194 + ... + 1488207.

It is an arithmetic number, because the mean of its divisors is an integer number (5952804).

Almost surely, 2^20834807 is an apocalyptic number.

20834807 is a deficient number, since it is larger than the sum of its proper divisors (2976409).

20834807 is an equidigital number, since it uses as much as digits as its factorization.

20834807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976408.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20834807 is about 4564.5160751168. The cubic root of 20834807 is about 275.1670918417.

The spelling of 20834807 in words is "twenty million, eight hundred thirty-four thousand, eight hundred seven".