20883843 has 6 divisors (see below), whose sum is σ = 30165564. Its totient is φ = 13922556.

The previous prime is 20883829. The next prime is 20883847. The reversal of 20883843 is 34838802.

It is a happy number.

It is not a de Polignac number, because 20883843 - 2⁴ = 20883827 is a prime.

It is a super-2 number, since 2×20883843² = 872269796897298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20883798 and 20883807.

It is not an unprimeable number, because it can be changed into a prime (20883847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1160205 + ... + 1160222.

It is an arithmetic number, because the mean of its divisors is an integer number (5027594).

Almost surely, 2^20883843 is an apocalyptic number.

20883843 is a deficient number, since it is larger than the sum of its proper divisors (9281721).

20883843 is a wasteful number, since it uses less digits than its factorization.

20883843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320433 (or 2320430 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 20883843 is about 4569.8843530225. The cubic root of 20883843 is about 275.3827969313.

The spelling of 20883843 in words is "twenty million, eight hundred eighty-three thousand, eight hundred forty-three".