3840286 has 4 divisors (see below), whose sum is σ = 5760432. Its totient is φ = 1920142.

The previous prime is 3840271. The next prime is 3840289. The reversal of 3840286 is 6820483.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 960070 + ... + 960073.

It is an arithmetic number, because the mean of its divisors is an integer number (1440108).

Almost surely, 2^3840286 is an apocalyptic number.

3840286 is a deficient number, since it is larger than the sum of its proper divisors (1920146).

3840286 is a wasteful number, since it uses less digits than its factorization.

3840286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920145.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 3840286 is about 1959.6647672497. The cubic root of 3840286 is about 156.5985932313.

The spelling of 3840286 in words is "three million, eight hundred forty thousand, two hundred eighty-six".