20412823 has 8 divisors (see below), whose sum is σ = 20835200. Its totient is φ = 19994040.

The previous prime is 20412817. The next prime is 20412871. The reversal of 20412823 is 32821402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20412794 and 20412803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12568 + ... + 14098.

It is an arithmetic number, because the mean of its divisors is an integer number (2604400).

Almost surely, 2^20412823 is an apocalyptic number.

20412823 is a deficient number, since it is larger than the sum of its proper divisors (422377).

20412823 is a wasteful number, since it uses less digits than its factorization.

20412823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20412823 is about 4518.0552232127. The cubic root of 20412823 is about 273.2966804246.

The spelling of 20412823 in words is "twenty million, four hundred twelve thousand, eight hundred twenty-three".