28634342860 has 24 divisors (see below), whose sum is σ = 61266690576. Its totient is φ = 11237628480.

The previous prime is 28634342833. The next prime is 28634342861. The reversal of 28634342860 is 6824343682.

It is a self number, because there is not a number n which added to its sum of digits gives 28634342860.

It is not an unprimeable number, because it can be changed into a prime (28634342861) 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, 13505706 + ... + 13507825.

It is an arithmetic number, because the mean of its divisors is an integer number (2552778774).

Almost surely, 2^28634342860 is an apocalyptic number.

28634342860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28634342860 is an abundant number, since it is smaller than the sum of its proper divisors (32632347716).

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

28634342860 is a wasteful number, since it uses less digits than its factorization.

28634342860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27013593 (or 27013591 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 28634342860 in words is "twenty-eight billion, six hundred thirty-four million, three hundred forty-two thousand, eight hundred sixty".