28705743852 has 24 divisors (see below), whose sum is σ = 66993404016. Its totient is φ = 9566676288.

The previous prime is 28705743827. The next prime is 28705743853. The reversal of 28705743852 is 25834750782.

It is a junction number, because it is equal to n+sod(n) for n = 28705743795 and 28705743804.

It is not an unprimeable number, because it can be changed into a prime (28705743853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174663 + ... + 296510.

It is an arithmetic number, because the mean of its divisors is an integer number (2791391834).

Almost surely, 2^28705743852 is an apocalyptic number.

It is an amenable number.

28705743852 is an abundant number, since it is smaller than the sum of its proper divisors (38287660164).

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

28705743852 is a wasteful number, since it uses less digits than its factorization.

28705743852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476257 (or 476255 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 28705743852 in words is "twenty-eight billion, seven hundred five million, seven hundred forty-three thousand, eight hundred fifty-two".