287938113 has 8 divisors (see below), whose sum is σ = 390424800. Its totient is φ = 188705088.

The previous prime is 287938099. The next prime is 287938151. The reversal of 287938113 is 311839782.

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

It is not a de Polignac number, because 287938113 - 2⁴ = 287938097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287938153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 813208 + ... + 813561.

It is an arithmetic number, because the mean of its divisors is an integer number (48803100).

Almost surely, 2^287938113 is an apocalyptic number.

It is an amenable number.

287938113 is a deficient number, since it is larger than the sum of its proper divisors (102486687).

287938113 is a wasteful number, since it uses less digits than its factorization.

287938113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626831.

The product of its digits is 72576, while the sum is 42.

The square root of 287938113 is about 16968.7392872894. The cubic root of 287938113 is about 660.3381439895.

The spelling of 287938113 in words is "two hundred eighty-seven million, nine hundred thirty-eight thousand, one hundred thirteen".