285717987276 has 96 divisors (see below), whose sum is σ = 744198658560. Its totient is φ = 84787282944.

The previous prime is 285717987271. The next prime is 285717987283. The reversal of 285717987276 is 672789717582.

It is a self number, because there is not a number n which added to its sum of digits gives 285717987276.

It is not an unprimeable number, because it can be changed into a prime (285717987271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2450806 + ... + 2564738.

It is an arithmetic number, because the mean of its divisors is an integer number (7752069360).

Almost surely, 2^285717987276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285717987276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372099329280).

285717987276 is an abundant number, since it is smaller than the sum of its proper divisors (458480671284).

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

285717987276 is a wasteful number, since it uses less digits than its factorization.

285717987276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114623 (or 114621 counting only the distinct ones).

The product of its digits is 165957120, while the sum is 69.

The spelling of 285717987276 in words is "two hundred eighty-five billion, seven hundred seventeen million, nine hundred eighty-seven thousand, two hundred seventy-six".