287478130 has 8 divisors (see below), whose sum is σ = 517460652. Its totient is φ = 114991248.

The previous prime is 287478071. The next prime is 287478157. The reversal of 287478130 is 31874782.

287478130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 285170769 + 2307361 = 16887^2 + 1519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14373897 + ... + 14373916.

Almost surely, 2^287478130 is an apocalyptic number.

287478130 is a deficient number, since it is larger than the sum of its proper divisors (229982522).

287478130 is a wasteful number, since it uses less digits than its factorization.

287478130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28747820.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 287478130 is about 16955.1800344320. The cubic root of 287478130 is about 659.9863250916.

The spelling of 287478130 in words is "two hundred eighty-seven million, four hundred seventy-eight thousand, one hundred thirty".