287171728746 has 96 divisors (see below), whose sum is σ = 681322168320. Its totient is φ = 79033069440.

The previous prime is 287171728741. The next prime is 287171728757. The reversal of 287171728746 is 647827171782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 287171728746.

It is not an unprimeable number, because it can be changed into a prime (287171728741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5551815 + ... + 5603301.

It is an arithmetic number, because the mean of its divisors is an integer number (7097105920).

Almost surely, 2^287171728746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287171728746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340661084160).

287171728746 is an abundant number, since it is smaller than the sum of its proper divisors (394150439574).

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

287171728746 is a wasteful number, since it uses less digits than its factorization.

287171728746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51660 (or 51619 counting only the distinct ones).

The product of its digits is 14751744, while the sum is 60.

The spelling of 287171728746 in words is "two hundred eighty-seven billion, one hundred seventy-one million, seven hundred twenty-eight thousand, seven hundred forty-six".