28956204067 has 8 divisors (see below), whose sum is σ = 33094250336. Its totient is φ = 24818519232.

The previous prime is 28956204061. The next prime is 28956204071. The reversal of 28956204067 is 76040265982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28956204067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28956204067.

It is not an unprimeable number, because it can be changed into a prime (28956204061) 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, 111343 + ... + 265159.

It is an arithmetic number, because the mean of its divisors is an integer number (4136781292).

Almost surely, 2^28956204067 is an apocalyptic number.

28956204067 is a deficient number, since it is larger than the sum of its proper divisors (4138046269).

28956204067 is a wasteful number, since it uses less digits than its factorization.

28956204067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180717.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28956204067 in words is "twenty-eight billion, nine hundred fifty-six million, two hundred four thousand, sixty-seven".