20883883 has 4 divisors (see below), whose sum is σ = 21393288. Its totient is φ = 20374480.

The previous prime is 20883881. The next prime is 20883893. The reversal of 20883883 is 38838802.

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 20883883 - 2¹ = 20883881 is a prime.

It is a super-2 number, since 2×20883883² = 872273138315378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20883881) 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, 254641 + ... + 254722.

It is an arithmetic number, because the mean of its divisors is an integer number (5348322).

Almost surely, 2^20883883 is an apocalyptic number.

20883883 is a deficient number, since it is larger than the sum of its proper divisors (509405).

20883883 is an equidigital number, since it uses as much as digits as its factorization.

20883883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509404.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 20883883 is about 4569.8887294988. Note that the first 3 decimals coincide. The cubic root of 20883883 is about 275.3829727499.

The spelling of 20883883 in words is "twenty million, eight hundred eighty-three thousand, eight hundred eighty-three".