28123545260 has 24 divisors (see below), whose sum is σ = 59065873440. Its totient is φ = 11248193664.

The previous prime is 28123545259. The next prime is 28123545341. The reversal of 28123545260 is 6254532182.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124721 + ... + 267959.

It is an arithmetic number, because the mean of its divisors is an integer number (2461078060).

Almost surely, 2^28123545260 is an apocalyptic number.

28123545260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28123545260 is an abundant number, since it is smaller than the sum of its proper divisors (30942328180).

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

28123545260 is a wasteful number, since it uses less digits than its factorization.

28123545260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153065 (or 153063 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 28123545260 in words is "twenty-eight billion, one hundred twenty-three million, five hundred forty-five thousand, two hundred sixty".