3840287 has 16 divisors (see below), whose sum is σ = 4485888. Its totient is φ = 3252480.

The previous prime is 3840271. The next prime is 3840289. The reversal of 3840287 is 7820483.

It is not a de Polignac number, because 3840287 - 2⁴ = 3840271 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840289) 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 15 ways as a sum of consecutive naturals, for example, 10703 + ... + 11055.

It is an arithmetic number, because the mean of its divisors is an integer number (280368).

Almost surely, 2^3840287 is an apocalyptic number.

3840287 is a deficient number, since it is larger than the sum of its proper divisors (645601).

3840287 is a wasteful number, since it uses less digits than its factorization.

3840287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 3840287 is about 1959.6650223954. The cubic root of 3840287 is about 156.5986068239.

The spelling of 3840287 in words is "three million, eight hundred forty thousand, two hundred eighty-seven".