28506087382288 has 20 divisors (see below), whose sum is σ = 55230636634048. Its totient is φ = 14253019863840.

The previous prime is 28506087382219. The next prime is 28506087382291. The reversal of 28506087382288 is 88228378060582.

It is a super-2 number, since 2×28506087382288² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12186373 + ... + 14335963.

Almost surely, 2^{28506087382288} is an apocalyptic number.

It is an amenable number.

28506087382288 is a deficient number, since it is larger than the sum of its proper divisors (26724549251760).

28506087382288 is a wasteful number, since it uses less digits than its factorization.

28506087382288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978422 (or 2978416 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 67.

The spelling of 28506087382288 in words is "twenty-eight trillion, five hundred six billion, eighty-seven million, three hundred eighty-two thousand, two hundred eighty-eight".