3856290 has 32 divisors (see below), whose sum is σ = 9317376. Its totient is φ = 1021440.

The previous prime is 3856289. The next prime is 3856357. The reversal of 3856290 is 926583.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 5394 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (291168).

Almost surely, 2^3856290 is an apocalyptic number.

3856290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3856290 is an abundant number, since it is smaller than the sum of its proper divisors (5461086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3856290 is a wasteful number, since it uses less digits than its factorization.

3856290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 3856290 is about 1963.7438733195. The cubic root of 3856290 is about 156.8158279611.

The spelling of 3856290 in words is "three million, eight hundred fifty-six thousand, two hundred ninety".