28260851265672 has 32 divisors (see below), whose sum is σ = 70728180026400. Its totient is φ = 9410143506944.

The previous prime is 28260851265667. The next prime is 28260851265739. The reversal of 28260851265672 is 27656215806282.

It is a super-3 number, since 3×28260851265672³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 633742758 + ... + 633787349.

It is an arithmetic number, because the mean of its divisors is an integer number (2210255625825).

Almost surely, 2^{28260851265672} is an apocalyptic number.

It is an amenable number.

28260851265672 is an abundant number, since it is smaller than the sum of its proper divisors (42467328760728).

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

28260851265672 is a wasteful number, since it uses less digits than its factorization.

28260851265672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267531045 (or 1267531041 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 28260851265672 in words is "twenty-eight trillion, two hundred sixty billion, eight hundred fifty-one million, two hundred sixty-five thousand, six hundred seventy-two".