28310842681 has 8 divisors (see below), whose sum is σ = 30890229984. Its totient is φ = 25732401120.

The previous prime is 28310842643. The next prime is 28310842691. The reversal of 28310842681 is 18624801382.

It is a happy number.

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 28310842681 - 2¹¹ = 28310840633 is a prime.

It is a super-2 number, since 2×28310842681² (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 (28310842601) 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, 173100 + ... + 294253.

It is an arithmetic number, because the mean of its divisors is an integer number (3861278748).

Almost surely, 2^28310842681 is an apocalyptic number.

It is an amenable number.

28310842681 is a deficient number, since it is larger than the sum of its proper divisors (2579387303).

28310842681 is a wasteful number, since it uses less digits than its factorization.

28310842681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472871.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 28310842681 in words is "twenty-eight billion, three hundred ten million, eight hundred forty-two thousand, six hundred eighty-one".