20806323 has 8 divisors (see below), whose sum is σ = 27801600. Its totient is φ = 13840968.

The previous prime is 20806277. The next prime is 20806339. The reversal of 20806323 is 32360802.

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

It is not a de Polignac number, because 20806323 - 2⁶ = 20806259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20806293 and 20806302.

It is not an unprimeable number, because it can be changed into a prime (20806823) 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, 5803 + ... + 8676.

It is an arithmetic number, because the mean of its divisors is an integer number (3475200).

Almost surely, 2^20806323 is an apocalyptic number.

20806323 is a deficient number, since it is larger than the sum of its proper divisors (6995277).

20806323 is a wasteful number, since it uses less digits than its factorization.

20806323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14961.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20806323 is about 4561.3948524547. The cubic root of 20806323 is about 275.0416377724.

The spelling of 20806323 in words is "twenty million, eight hundred six thousand, three hundred twenty-three".