28362808281 has 8 divisors (see below), whose sum is σ = 37957662720. Its totient is φ = 18838246352.

The previous prime is 28362808267. The next prime is 28362808289. The reversal of 28362808281 is 18280826382.

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 28362808281 - 2²² = 28358613977 is a prime.

It is a super-4 number, since 4×28362808281⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 28362808281.

It is not an unprimeable number, because it can be changed into a prime (28362808289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17572185 + ... + 17573798.

It is an arithmetic number, because the mean of its divisors is an integer number (4744707840).

Almost surely, 2^28362808281 is an apocalyptic number.

It is an amenable number.

28362808281 is a deficient number, since it is larger than the sum of its proper divisors (9594854439).

28362808281 is a wasteful number, since it uses less digits than its factorization.

28362808281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35146255.

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 28362808281 in words is "twenty-eight billion, three hundred sixty-two million, eight hundred eight thousand, two hundred eighty-one".