3855285 has 24 divisors (see below), whose sum is σ = 7637760. Its totient is φ = 1762272.

The previous prime is 3855239. The next prime is 3855287. The reversal of 3855285 is 5825583.

It is not a de Polignac number, because 3855285 - 2⁸ = 3855029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5805 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (318240).

Almost surely, 2^3855285 is an apocalyptic number.

3855285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3855285 is a deficient number, since it is larger than the sum of its proper divisors (3782475).

3855285 is a wasteful number, since it uses less digits than its factorization.

3855285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257 (or 12254 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 3855285 is about 1963.4879678776. The cubic root of 3855285 is about 156.8022040203.

The spelling of 3855285 in words is "three million, eight hundred fifty-five thousand, two hundred eighty-five".