28235713802856 has 64 divisors (see below), whose sum is σ = 80700641366400. Its totient is φ = 8064629465088.

The previous prime is 28235713802827. The next prime is 28235713802861. The reversal of 28235713802856 is 65820831753282.

It is a self number, because there is not a number n which added to its sum of digits gives 28235713802856.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27805305 + ... + 28802888.

It is an arithmetic number, because the mean of its divisors is an integer number (1260947521350).

Almost surely, 2^{28235713802856} is an apocalyptic number.

It is an amenable number.

28235713802856 is an abundant number, since it is smaller than the sum of its proper divisors (52464927563544).

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

28235713802856 is a wasteful number, since it uses less digits than its factorization.

28235713802856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56611178 (or 56611174 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 28235713802856 in words is "twenty-eight trillion, two hundred thirty-five billion, seven hundred thirteen million, eight hundred two thousand, eight hundred fifty-six".