287125878 has 32 divisors (see below), whose sum is σ = 632814336. Its totient is φ = 86290848.

The previous prime is 287125873. The next prime is 287125973. The reversal of 287125878 is 878521782.

287125878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287125871) 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, 39450 + ... + 46157.

It is an arithmetic number, because the mean of its divisors is an integer number (19775448).

Almost surely, 2^287125878 is an apocalyptic number.

287125878 is an abundant number, since it is smaller than the sum of its proper divisors (345688458).

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

287125878 is a wasteful number, since it uses less digits than its factorization.

287125878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85668.

The product of its digits is 501760, while the sum is 48.

The square root of 287125878 is about 16944.7891105201. The cubic root of 287125878 is about 659.7166506388.

The spelling of 287125878 in words is "two hundred eighty-seven million, one hundred twenty-five thousand, eight hundred seventy-eight".