20800228039 has 4 divisors (see below), whose sum is σ = 20876981920. Its totient is φ = 20723474160.

The previous prime is 20800228027. The next prime is 20800228067. The reversal of 20800228039 is 93082200802.

It is a happy number.

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 20800228039 - 2⁹ = 20800227527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20800227995 and 20800228013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800228639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38376534 + ... + 38377075.

It is an arithmetic number, because the mean of its divisors is an integer number (5219245480).

Almost surely, 2^20800228039 is an apocalyptic number.

20800228039 is a deficient number, since it is larger than the sum of its proper divisors (76753881).

20800228039 is an equidigital number, since it uses as much as digits as its factorization.

20800228039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76753880.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 20800228039 in words is "twenty billion, eight hundred million, two hundred twenty-eight thousand, thirty-nine".