28687293043 has 2 divisors, whose sum is σ = 28687293044. Its totient is φ = 28687293042.

The previous prime is 28687292969. The next prime is 28687293067. The reversal of 28687293043 is 34039278682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28687293043 - 2³³ = 20097358451 is a prime.

It is not a weakly prime, because it can be changed into another prime (28687293443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14343646521 + 14343646522.

It is an arithmetic number, because the mean of its divisors is an integer number (14343646522).

Almost surely, 2^28687293043 is an apocalyptic number.

28687293043 is a deficient number, since it is larger than the sum of its proper divisors (1).

28687293043 is an equidigital number, since it uses as much as digits as its factorization.

28687293043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 28687293043 in words is "twenty-eight billion, six hundred eighty-seven million, two hundred ninety-three thousand, forty-three".