28810705081 has 8 divisors (see below), whose sum is σ = 31372819200. Its totient is φ = 26353167120.

The previous prime is 28810705067. The next prime is 28810705093. The reversal of 28810705081 is 18050701882.

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

It is a cyclic number.

It is not a de Polignac number, because 28810705081 - 2⁷ = 28810704953 is a prime.

It is a super-2 number, since 2×28810705081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28810705181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26143465 + ... + 26144566.

It is an arithmetic number, because the mean of its divisors is an integer number (3921602400).

Almost surely, 2^28810705081 is an apocalyptic number.

It is an amenable number.

28810705081 is a deficient number, since it is larger than the sum of its proper divisors (2562114119).

28810705081 is a wasteful number, since it uses less digits than its factorization.

28810705081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52288079.

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 28810705081 in words is "twenty-eight billion, eight hundred ten million, seven hundred five thousand, eighty-one".