28650285281 has 8 divisors (see below), whose sum is σ = 29948851200. Its totient is φ = 27375117120.

The previous prime is 28650285263. The next prime is 28650285299. The reversal of 28650285281 is 18258205682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28650285263) and next prime (28650285299).

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-28650285281 is a prime.

It is a super-2 number, since 2×28650285281² (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 (28650285241) 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, 5846936 + ... + 5851833.

It is an arithmetic number, because the mean of its divisors is an integer number (3743606400).

Almost surely, 2^28650285281 is an apocalyptic number.

It is an amenable number.

28650285281 is a deficient number, since it is larger than the sum of its proper divisors (1298565919).

28650285281 is a wasteful number, since it uses less digits than its factorization.

28650285281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698879.

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 28650285281 in words is "twenty-eight billion, six hundred fifty million, two hundred eighty-five thousand, two hundred eighty-one".