28135746886 has 32 divisors (see below), whose sum is σ = 45639478080. Its totient is φ = 12931716096.

The previous prime is 28135746883. The next prime is 28135746887. The reversal of 28135746886 is 68864753182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28135746886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135746883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8744350 + ... + 8747566.

It is an arithmetic number, because the mean of its divisors is an integer number (1426233690).

Almost surely, 2^28135746886 is an apocalyptic number.

28135746886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28135746886 is a deficient number, since it is larger than the sum of its proper divisors (17503731194).

28135746886 is a wasteful number, since it uses less digits than its factorization.

28135746886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528.

The product of its digits is 15482880, while the sum is 58.

The spelling of 28135746886 in words is "twenty-eight billion, one hundred thirty-five million, seven hundred forty-six thousand, eight hundred eighty-six".