3161856 has 72 divisors (see below), whose sum is σ = 8830080. Its totient is φ = 1002496.

The previous prime is 3161819. The next prime is 3161857. The reversal of 3161856 is 6581613.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161857) 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, 17575 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (122640).

Almost surely, 2^3161856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4415040).

3161856 is an abundant number, since it is smaller than the sum of its proper divisors (5668224).

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

3161856 is a wasteful number, since it uses less digits than its factorization.

3161856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 207 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3161856 is about 1778.1608476176. The cubic root of 3161856 is about 146.7734025618.

The spelling of 3161856 in words is "three million, one hundred sixty-one thousand, eight hundred fifty-six".