28731445843 has 2 divisors, whose sum is σ = 28731445844. Its totient is φ = 28731445842.

The previous prime is 28731445829. The next prime is 28731445903. The reversal of 28731445843 is 34854413782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28731445843 - 2³³ = 20141511251 is a prime.

It is not a weakly prime, because it can be changed into another prime (28731445543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14365722921 + 14365722922.

It is an arithmetic number, because the mean of its divisors is an integer number (14365722922).

Almost surely, 2^28731445843 is an apocalyptic number.

28731445843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28731445843 is an equidigital number, since it uses as much as digits as its factorization.

28731445843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 49.

The spelling of 28731445843 in words is "twenty-eight billion, seven hundred thirty-one million, four hundred forty-five thousand, eight hundred forty-three".