28210013668172 has 24 divisors (see below), whose sum is σ = 59738852474784. Its totient is φ = 11378829042432.

The previous prime is 28210013668147. The next prime is 28210013668181. The reversal of 28210013668172 is 27186631001282.

It is an unprimeable number.

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, 29632366823 + ... + 29632367774.

It is an arithmetic number, because the mean of its divisors is an integer number (2489118853116).

Almost surely, 2^{28210013668172} is an apocalyptic number.

It is an amenable number.

28210013668172 is an abundant number, since it is smaller than the sum of its proper divisors (31528838806612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28210013668172 is a wasteful number, since it uses less digits than its factorization.

28210013668172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59264734625 (or 59264734623 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 28210013668172 in words is "twenty-eight trillion, two hundred ten billion, thirteen million, six hundred sixty-eight thousand, one hundred seventy-two".