28726557060 has 48 divisors (see below), whose sum is σ = 80878779072. Its totient is φ = 7618089600.

The previous prime is 28726557019. The next prime is 28726557091. The reversal of 28726557060 is 6075562782.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311726 + ... + 1333445.

It is an arithmetic number, because the mean of its divisors is an integer number (1684974564).

Almost surely, 2^28726557060 is an apocalyptic number.

28726557060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28726557060 is an abundant number, since it is smaller than the sum of its proper divisors (52152222012).

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

28726557060 is a wasteful number, since it uses less digits than its factorization.

28726557060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645364 (or 2645362 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 28726557060 in words is "twenty-eight billion, seven hundred twenty-six million, five hundred fifty-seven thousand, sixty".