2081828 has 24 divisors (see below), whose sum is σ = 4200000. Its totient is φ = 884448.

The previous prime is 2081813. The next prime is 2081831. The reversal of 2081828 is 8281802.

It is a self number, because there is not a number n which added to its sum of digits gives 2081828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (175000).

2^2081828 is an apocalyptic number.

2081828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2081828 is an abundant number, since it is smaller than the sum of its proper divisors (2118172).

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

2081828 is a wasteful number, since it uses less digits than its factorization.

2081828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 2081828 is about 1442.8541159799. The cubic root of 2081828 is about 127.6874699568.

Subtracting from 2081828 its product of nonzero digits (2048), we obtain a triangular number (2079780 = T₂₀₃₉).

The spelling of 2081828 in words is "two million, eighty-one thousand, eight hundred twenty-eight".