20806883 has 8 divisors (see below), whose sum is σ = 21421488. Its totient is φ = 20198304.

The previous prime is 20806871. The next prime is 20806897. The reversal of 20806883 is 38860802.

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

It is not a de Polignac number, because 20806883 - 2⁴ = 20806867 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

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, 6041 + ... + 8837.

It is an arithmetic number, because the mean of its divisors is an integer number (2677686).

Almost surely, 2^20806883 is an apocalyptic number.

20806883 is a deficient number, since it is larger than the sum of its proper divisors (614605).

20806883 is a wasteful number, since it uses less digits than its factorization.

20806883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 20806883 is about 4561.4562367735. The cubic root of 20806883 is about 275.0441053226.

The spelling of 20806883 in words is "twenty million, eight hundred six thousand, eight hundred eighty-three".