8140287 has 8 divisors (see below), whose sum is σ = 11106304. Its totient is φ = 5300568.

The previous prime is 8140261. The next prime is 8140291. The reversal of 8140287 is 7820418.

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

It is not a de Polignac number, because 8140287 - 2⁷ = 8140159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31423 + ... + 31680.

It is an arithmetic number, because the mean of its divisors is an integer number (1388288).

Almost surely, 2^8140287 is an apocalyptic number.

8140287 is a deficient number, since it is larger than the sum of its proper divisors (2966017).

8140287 is a wasteful number, since it uses less digits than its factorization.

8140287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63149.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 8140287 is about 2853.1188198181. The cubic root of 8140287 is about 201.1622906509.

The spelling of 8140287 in words is "eight million, one hundred forty thousand, two hundred eighty-seven".