20162823 has 4 divisors (see below), whose sum is σ = 26883768. Its totient is φ = 13441880.

The previous prime is 20162797. The next prime is 20162827. The reversal of 20162823 is 32826102.

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

It is a cyclic number.

It is not a de Polignac number, because 20162823 - 2⁸ = 20162567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20162793 and 20162802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20162827) 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, 3360468 + ... + 3360473.

It is an arithmetic number, because the mean of its divisors is an integer number (6720942).

Almost surely, 2^20162823 is an apocalyptic number.

20162823 is a deficient number, since it is larger than the sum of its proper divisors (6720945).

20162823 is an equidigital number, since it uses as much as digits as its factorization.

20162823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720944.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20162823 is about 4490.3032191601. The cubic root of 20162823 is about 272.1763877172.

Adding to 20162823 its reverse (32826102), we get a palindrome (52988925).

The spelling of 20162823 in words is "twenty million, one hundred sixty-two thousand, eight hundred twenty-three".