28412551728 has 120 divisors (see below), whose sum is σ = 90515992320. Its totient is φ = 8235511680.

The previous prime is 28412551723. The next prime is 28412551777. The reversal of 28412551728 is 82715521482.

28412551728 is a `hidden beast` number, since 2 + 8 + 4 + 125 + 517 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28412551723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353508 + ... + 426371.

It is an arithmetic number, because the mean of its divisors is an integer number (754299936).

Almost surely, 2^28412551728 is an apocalyptic number.

It is an amenable number.

28412551728 is an abundant number, since it is smaller than the sum of its proper divisors (62103440592).

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

28412551728 is a wasteful number, since it uses less digits than its factorization.

28412551728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779927 (or 779918 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The spelling of 28412551728 in words is "twenty-eight billion, four hundred twelve million, five hundred fifty-one thousand, seven hundred twenty-eight".