287879088 has 160 divisors (see below), whose sum is σ = 910656000. Its totient is φ = 76492800.

The previous prime is 287879087. The next prime is 287879107. The reversal of 287879088 is 880978782.

It is a Cunningham number, because it is equal to 16967²-1.

It is not an unprimeable number, because it can be changed into a prime (287879083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 576663 + ... + 577161.

It is an arithmetic number, because the mean of its divisors is an integer number (5691600).

Almost surely, 2^287879088 is an apocalyptic number.

287879088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287879088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455328000).

287879088 is an abundant number, since it is smaller than the sum of its proper divisors (622776912).

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

287879088 is a wasteful number, since it uses less digits than its factorization.

287879088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 57.

The square root of 287879088 is about 16966.9999705310. Note that the first 4 decimals coincide. The cubic root of 287879088 is about 660.2930195677.

The spelling of 287879088 in words is "two hundred eighty-seven million, eight hundred seventy-nine thousand, eighty-eight".