2028787020 has 96 divisors (see below), whose sum is σ = 6797327040. Its totient is φ = 499392000.

The previous prime is 2028786989. The next prime is 2028787031. The reversal of 2028787020 is 207878202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137481 + ... + 151520.

It is an arithmetic number, because the mean of its divisors is an integer number (70805490).

Almost surely, 2^2028787020 is an apocalyptic number.

2028787020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028787020 is an abundant number, since it is smaller than the sum of its proper divisors (4768540020).

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

2028787020 is a wasteful number, since it uses less digits than its factorization.

2028787020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289032 (or 289024 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2028787020 is about 45042.0583455064. The cubic root of 2028787020 is about 1265.9371725970.

The spelling of 2028787020 in words is "two billion, twenty-eight million, seven hundred eighty-seven thousand, twenty".