3856120 has 32 divisors (see below), whose sum is σ = 8748000. Its totient is φ = 1529728.

The previous prime is 3856109. The next prime is 3856123. The reversal of 3856120 is 216583.

It is a happy number.

It is a super-2 number, since 2×3856120² = 29739322908800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5637 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (273375).

Almost surely, 2^3856120 is an apocalyptic number.

It is an amenable number.

3856120 is an abundant number, since it is smaller than the sum of its proper divisors (4891880).

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

3856120 is a wasteful number, since it uses less digits than its factorization.

3856120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 3856120 is about 1963.7005881753. The cubic root of 3856120 is about 156.8135235802.

The spelling of 3856120 in words is "three million, eight hundred fifty-six thousand, one hundred twenty".