28283028275505 has 32 divisors (see below), whose sum is σ = 45639505728000. Its totient is φ = 14955667131392.

The previous prime is 28283028275501. The next prime is 28283028275519. The reversal of 28283028275505 is 50557282038282.

It is a cyclic number.

It is not a de Polignac number, because 28283028275505 - 2² = 28283028275501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28283028275501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6843705 + ... + 10168694.

It is an arithmetic number, because the mean of its divisors is an integer number (1426234554000).

Almost surely, 2^{28283028275505} is an apocalyptic number.

It is an amenable number.

28283028275505 is a deficient number, since it is larger than the sum of its proper divisors (17356477452495).

28283028275505 is a wasteful number, since it uses less digits than its factorization.

28283028275505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17013353.

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 28283028275505 in words is "twenty-eight trillion, two hundred eighty-three billion, twenty-eight million, two hundred seventy-five thousand, five hundred five".