28351519128 has 64 divisors (see below), whose sum is σ = 78790320000. Its totient is φ = 9446174496.

The previous prime is 28351519121. The next prime is 28351519129. The reversal of 28351519128 is 82191515382.

28351519128 is a `hidden beast` number, since 2 + 8 + 3 + 5 + 1 + 519 + 128 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28351519121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460723 + ... + 518621.

It is an arithmetic number, because the mean of its divisors is an integer number (1231098750).

Almost surely, 2^28351519128 is an apocalyptic number.

It is an amenable number.

28351519128 is an abundant number, since it is smaller than the sum of its proper divisors (50438800872).

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

28351519128 is a wasteful number, since it uses less digits than its factorization.

28351519128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60181 (or 60171 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The spelling of 28351519128 in words is "twenty-eight billion, three hundred fifty-one million, five hundred nineteen thousand, one hundred twenty-eight".