2028190840 has 32 divisors (see below), whose sum is σ = 4914463680. Its totient is φ = 748870272.

The previous prime is 2028190823. The next prime is 2028190861. The reversal of 2028190840 is 480918202.

It is a super-2 number, since 2×2028190840² = 8227116166919811200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2028190796 and 2028190805.

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, 1949664 + ... + 1950703.

It is an arithmetic number, because the mean of its divisors is an integer number (153576990).

Almost surely, 2^2028190840 is an apocalyptic number.

2028190840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028190840 is an abundant number, since it is smaller than the sum of its proper divisors (2886272840).

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

2028190840 is a wasteful number, since it uses less digits than its factorization.

2028190840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900391 (or 3900387 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 2028190840 is about 45035.4398224332. The cubic root of 2028190840 is about 1265.8131575482.

The spelling of 2028190840 in words is "two billion, twenty-eight million, one hundred ninety thousand, eight hundred forty".