20800113 has 4 divisors (see below), whose sum is σ = 27733488. Its totient is φ = 13866740.

The previous prime is 20800111. The next prime is 20800121. The reversal of 20800113 is 31100802.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20800113 - 2¹ = 20800111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20800092 and 20800101.

It is not an unprimeable number, because it can be changed into a prime (20800111) 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 3 ways as a sum of consecutive naturals, for example, 3466683 + ... + 3466688.

It is an arithmetic number, because the mean of its divisors is an integer number (6933372).

Almost surely, 2^20800113 is an apocalyptic number.

It is an amenable number.

20800113 is a deficient number, since it is larger than the sum of its proper divisors (6933375).

20800113 is an equidigital number, since it uses as much as digits as its factorization.

20800113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933374.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 20800113 is about 4560.7140888242. The cubic root of 20800113 is about 275.0142714357.

Adding to 20800113 its reverse (31100802), we get a palindrome (51900915).

The spelling of 20800113 in words is "twenty million, eight hundred thousand, one hundred thirteen".