28357845156 has 72 divisors (see below), whose sum is σ = 72099465984. Its totient is φ = 9397730880.

The previous prime is 28357845133. The next prime is 28357845161. The reversal of 28357845156 is 65154875382.

28357845156 is a `hidden beast` number, since 28 + 3 + 578 + 45 + 1 + 5 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7050426 + ... + 7054446.

It is an arithmetic number, because the mean of its divisors is an integer number (1001381472).

Almost surely, 2^28357845156 is an apocalyptic number.

It is an amenable number.

28357845156 is an abundant number, since it is smaller than the sum of its proper divisors (43741620828).

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

28357845156 is a wasteful number, since it uses less digits than its factorization.

28357845156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121 (or 5116 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 28357845156 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred forty-five thousand, one hundred fifty-six".