28985206267 has 4 divisors (see below), whose sum is σ = 29004390576. Its totient is φ = 28966021960.

The previous prime is 28985206253. The next prime is 28985206277. The reversal of 28985206267 is 76260258982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28985206267 - 2¹⁵ = 28985173499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28985206247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9589888 + ... + 9592909.

It is an arithmetic number, because the mean of its divisors is an integer number (7251097644).

Almost surely, 2^28985206267 is an apocalyptic number.

28985206267 is a deficient number, since it is larger than the sum of its proper divisors (19184309).

28985206267 is a wasteful number, since it uses less digits than its factorization.

28985206267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19184308.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 28985206267 in words is "twenty-eight billion, nine hundred eighty-five million, two hundred six thousand, two hundred sixty-seven".