28000255278 has 8 divisors (see below), whose sum is σ = 56000510568. Its totient is φ = 9333418424.

The previous prime is 28000255267. The next prime is 28000255343. The reversal of 28000255278 is 87255200082.

It is a happy number.

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

28000255278 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333354601 + ... + 2333354612.

It is an arithmetic number, because the mean of its divisors is an integer number (7000063821).

Almost surely, 2^28000255278 is an apocalyptic number.

28000255278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28000255278 is a wasteful number, since it uses less digits than its factorization.

28000255278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666709218.

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 28000255278 in words is "twenty-eight billion, two hundred fifty-five thousand, two hundred seventy-eight".