28276131133550 has 24 divisors (see below), whose sum is σ = 52674145475976. Its totient is φ = 11293131686240.

The previous prime is 28276131133541. The next prime is 28276131133589. The reversal of 28276131133550 is 5533113167282.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28276131133495 and 28276131133504.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 432986204 + ... + 433051503.

It is an arithmetic number, because the mean of its divisors is an integer number (2194756061499).

Almost surely, 2^{28276131133550} is an apocalyptic number.

28276131133550 is a deficient number, since it is larger than the sum of its proper divisors (24398014342426).

28276131133550 is a wasteful number, since it uses less digits than its factorization.

28276131133550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866038372 (or 866038367 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 28276131133550 in words is "twenty-eight trillion, two hundred seventy-six billion, one hundred thirty-one million, one hundred thirty-three thousand, five hundred fifty".