2028687700 has 36 divisors (see below), whose sum is σ = 4740890140. Its totient is φ = 749053440.

The previous prime is 2028687677. The next prime is 2028687701. The reversal of 2028687700 is 77868202.

It can be written as a sum of positive squares in 6 ways, for example, as 266256 + 2028421444 = 516^2 + 45038^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028687701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778965 + ... + 781564.

Almost surely, 2^2028687700 is an apocalyptic number.

2028687700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028687700 is an abundant number, since it is smaller than the sum of its proper divisors (2712202440).

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

2028687700 is a wasteful number, since it uses less digits than its factorization.

2028687700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560556 (or 1560549 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 2028687700 is about 45040.9558069098. The cubic root of 2028687700 is about 1265.9165141230.

The spelling of 2028687700 in words is "two billion, twenty-eight million, six hundred eighty-seven thousand, seven hundred".