28067254709 has 8 divisors (see below), whose sum is σ = 30426450432. Its totient is φ = 25736655600.

The previous prime is 28067254661. The next prime is 28067254763. The reversal of 28067254709 is 90745276082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28067254709 - 2¹² = 28067250613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28067254769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7147109 + ... + 7151034.

It is an arithmetic number, because the mean of its divisors is an integer number (3803306304).

Almost surely, 2^28067254709 is an apocalyptic number.

It is an amenable number.

28067254709 is a deficient number, since it is larger than the sum of its proper divisors (2359195723).

28067254709 is a wasteful number, since it uses less digits than its factorization.

28067254709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14298307.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 28067254709 in words is "twenty-eight billion, sixty-seven million, two hundred fifty-four thousand, seven hundred nine".