28301866813 has 8 divisors (see below), whose sum is σ = 31531674240. Its totient is φ = 25181544480.

The previous prime is 28301866771. The next prime is 28301866889. The reversal of 28301866813 is 31866810382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28301866813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28301866213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27370728 + ... + 27371761.

It is an arithmetic number, because the mean of its divisors is an integer number (3941459280).

Almost surely, 2^28301866813 is an apocalyptic number.

It is an amenable number.

28301866813 is a deficient number, since it is larger than the sum of its proper divisors (3229807427).

28301866813 is a wasteful number, since it uses less digits than its factorization.

28301866813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54742547.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 28301866813 in words is "twenty-eight billion, three hundred one million, eight hundred sixty-six thousand, eight hundred thirteen".