287438055 has 8 divisors (see below), whose sum is σ = 459900912. Its totient is φ = 153300288.

The previous prime is 287438009. The next prime is 287438087. The reversal of 287438055 is 550834782.

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

It is not a de Polignac number, because 287438055 - 2⁹ = 287437543 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 287437998 and 287438016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9581254 + ... + 9581283.

It is an arithmetic number, because the mean of its divisors is an integer number (57487614).

Almost surely, 2^287438055 is an apocalyptic number.

287438055 is a deficient number, since it is larger than the sum of its proper divisors (172462857).

287438055 is a wasteful number, since it uses less digits than its factorization.

287438055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19162545.

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 287438055 is about 16953.9982010144. The cubic root of 287438055 is about 659.9556558820.

The spelling of 287438055 in words is "two hundred eighty-seven million, four hundred thirty-eight thousand, fifty-five".