28725854340 has 48 divisors (see below), whose sum is σ = 80462430720. Its totient is φ = 7657367040.

The previous prime is 28725854321. The next prime is 28725854351. The reversal of 28725854340 is 4345852782.

It is a self number, because there is not a number n which added to its sum of digits gives 28725854340.

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, 75100 + ... + 251180.

It is an arithmetic number, because the mean of its divisors is an integer number (1676300640).

Almost surely, 2^28725854340 is an apocalyptic number.

28725854340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28725854340 is an abundant number, since it is smaller than the sum of its proper divisors (51736576380).

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

28725854340 is a wasteful number, since it uses less digits than its factorization.

28725854340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178812 (or 178810 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 28725854340 in words is "twenty-eight billion, seven hundred twenty-five million, eight hundred fifty-four thousand, three hundred forty".