10728892891 has 4 divisors (see below), whose sum is σ = 10978402072. Its totient is φ = 10479383712.

The previous prime is 10728892861. The next prime is 10728892901. The reversal of 10728892891 is 19829882701.

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 10728892891 - 2⁹ = 10728892379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10728892841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124754526 + ... + 124754611.

It is an arithmetic number, because the mean of its divisors is an integer number (2744600518).

Almost surely, 2^10728892891 is an apocalyptic number.

10728892891 is a deficient number, since it is larger than the sum of its proper divisors (249509181).

10728892891 is an equidigital number, since it uses as much as digits as its factorization.

10728892891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249509180.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The spelling of 10728892891 in words is "ten billion, seven hundred twenty-eight million, eight hundred ninety-two thousand, eight hundred ninety-one".