2081862 has 40 divisors (see below), whose sum is σ = 4756752. Its totient is φ = 680400.

The previous prime is 2081861. The next prime is 2081873. The reversal of 2081862 is 2681802.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11412 + ... + 11592.

2^2081862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2081862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2378376).

2081862 is an abundant number, since it is smaller than the sum of its proper divisors (2674890).

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

2081862 is a wasteful number, since it uses less digits than its factorization.

2081862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2081862 is about 1442.8658981347. The cubic root of 2081862 is about 127.6881650751.

The spelling of 2081862 in words is "two million, eighty-one thousand, eight hundred sixty-two".