3845556 has 120 divisors (see below), whose sum is σ = 11952864. Its totient is φ = 1062720.

The previous prime is 3845549. The next prime is 3845557. The reversal of 3845556 is 6555483.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 3845556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845557) 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 39 ways as a sum of consecutive naturals, for example, 46291 + ... + 46373.

Almost surely, 2^3845556 is an apocalyptic number.

3845556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3845556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5976432).

3845556 is an abundant number, since it is smaller than the sum of its proper divisors (8107308).

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

3845556 is a wasteful number, since it uses less digits than its factorization.

3845556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 112 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 3845556 is about 1961.0089239981. The cubic root of 3845556 is about 156.6701935728.

The spelling of 3845556 in words is "three million, eight hundred forty-five thousand, five hundred fifty-six".