287889381822 has 32 divisors (see below), whose sum is σ = 658059846912. Its totient is φ = 82250737344.

The previous prime is 287889381821. The next prime is 287889381853. The reversal of 287889381822 is 228183988782.

287889381822 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287889381821) 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, 1006458 + ... + 1260450.

It is an arithmetic number, because the mean of its divisors is an integer number (20564370216).

Almost surely, 2^287889381822 is an apocalyptic number.

287889381822 is an abundant number, since it is smaller than the sum of its proper divisors (370170465090).

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

287889381822 is a wasteful number, since it uses less digits than its factorization.

287889381822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280992.

The product of its digits is 49545216, while the sum is 66.

The spelling of 287889381822 in words is "two hundred eighty-seven billion, eight hundred eighty-nine million, three hundred eighty-one thousand, eight hundred twenty-two".