28135294886 has 8 divisors (see below), whose sum is σ = 44424149880. Its totient is φ = 13327244928.

The previous prime is 28135294883. The next prime is 28135295009. The reversal of 28135294886 is 68849253182.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135294883) 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, 370201211 + ... + 370201286.

It is an arithmetic number, because the mean of its divisors is an integer number (5553018735).

Almost surely, 2^28135294886 is an apocalyptic number.

28135294886 is a deficient number, since it is larger than the sum of its proper divisors (16288854994).

28135294886 is a wasteful number, since it uses less digits than its factorization.

28135294886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740402518.

The product of its digits is 6635520, while the sum is 56.

The spelling of 28135294886 in words is "twenty-eight billion, one hundred thirty-five million, two hundred ninety-four thousand, eight hundred eighty-six".