20092791 has 4 divisors (see below), whose sum is σ = 26790392. Its totient is φ = 13395192.

The previous prime is 20092783. The next prime is 20092817. The reversal of 20092791 is 19729002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20092791 - 2³ = 20092783 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 (20092741) 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, 3348796 + ... + 3348801.

It is an arithmetic number, because the mean of its divisors is an integer number (6697598).

Almost surely, 2^20092791 is an apocalyptic number.

20092791 is a deficient number, since it is larger than the sum of its proper divisors (6697601).

20092791 is an equidigital number, since it uses as much as digits as its factorization.

20092791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697600.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 20092791 is about 4482.4982989400. The cubic root of 20092791 is about 271.8609033251.

The spelling of 20092791 in words is "twenty million, ninety-two thousand, seven hundred ninety-one".