2028140 has 24 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 775808.

The previous prime is 2028139. The next prime is 2028179. The reversal of 2028140 is 418202.

2028140 = 500² + 501² + ... + 507².

It is a super-2 number, since 2×2028140² = 8226703719200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1745 + ... + 2664.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^2028140 is an apocalyptic number.

2028140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028140 is an abundant number, since it is smaller than the sum of its proper divisors (2417140).

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

2028140 is a wasteful number, since it uses less digits than its factorization.

2028140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2028140 is about 1424.1278032536. The cubic root of 2028140 is about 126.5802580884.

The spelling of 2028140 in words is "two million, twenty-eight thousand, one hundred forty".