28812385956 has 48 divisors (see below), whose sum is σ = 68388747840. Its totient is φ = 9438702720.

The previous prime is 28812385949. The next prime is 28812385957. The reversal of 28812385956 is 65958321882.

It is a junction number, because it is equal to n+sod(n) for n = 28812385896 and 28812385905.

It is not an unprimeable number, because it can be changed into a prime (28812385957) 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, 883615 + ... + 915641.

It is an arithmetic number, because the mean of its divisors is an integer number (1424765580).

Almost surely, 2^28812385956 is an apocalyptic number.

It is an amenable number.

28812385956 is an abundant number, since it is smaller than the sum of its proper divisors (39576361884).

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

28812385956 is a wasteful number, since it uses less digits than its factorization.

28812385956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33324 (or 33322 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 57.

The spelling of 28812385956 in words is "twenty-eight billion, eight hundred twelve million, three hundred eighty-five thousand, nine hundred fifty-six".