28274256170172 has 72 divisors (see below), whose sum is σ = 71886310344576. Its totient is φ = 9369993919104.

The previous prime is 28274256170119. The next prime is 28274256170177. The reversal of 28274256170172 is 27107165247282.

28274256170172 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 4 + 2 + 5 + 617 + 0 + 17 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28274256170177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376114933 + ... + 376190099.

It is an arithmetic number, because the mean of its divisors is an integer number (998420977008).

Almost surely, 2^{28274256170172} is an apocalyptic number.

It is an amenable number.

28274256170172 is an abundant number, since it is smaller than the sum of its proper divisors (43612054174404).

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

28274256170172 is a wasteful number, since it uses less digits than its factorization.

28274256170172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135747 (or 135742 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 28274256170172 in words is "twenty-eight trillion, two hundred seventy-four billion, two hundred fifty-six million, one hundred seventy thousand, one hundred seventy-two".