2031856 has 30 divisors (see below), whose sum is σ = 4104152. Its totient is φ = 974400.

The previous prime is 2031851. The next prime is 2031863. The reversal of 2031856 is 6581302.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2031856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13381 + ... + 13531.

2^2031856 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 2031856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052076).

2031856 is an abundant number, since it is smaller than the sum of its proper divisors (2072296).

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

2031856 is a wasteful number, since it uses less digits than its factorization.

2031856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 182 counting only the distinct ones).

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

The square root of 2031856 is about 1425.4318643836. The cubic root of 2031856 is about 126.6575185760.

The spelling of 2031856 in words is "two million, thirty-one thousand, eight hundred fifty-six".