2028800365 has 4 divisors (see below), whose sum is σ = 2434560444. Its totient is φ = 1623040288.

The previous prime is 2028800341. The next prime is 2028800387. The reversal of 2028800365 is 5630088202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 671172649 + 1357627716 = 25907^2 + 36846^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028800365 - 2¹³ = 2028792173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2028800365.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 202880032 + ... + 202880041.

It is an arithmetic number, because the mean of its divisors is an integer number (608640111).

Almost surely, 2^2028800365 is an apocalyptic number.

It is an amenable number.

2028800365 is a deficient number, since it is larger than the sum of its proper divisors (405760079).

2028800365 is an equidigital number, since it uses as much as digits as its factorization.

2028800365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405760078.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 2028800365 is about 45042.2064845851. The cubic root of 2028800365 is about 1265.9399482940.

Adding to 2028800365 its reverse (5630088202), we get a palindrome (7658888567).

The spelling of 2028800365 in words is "two billion, twenty-eight million, eight hundred thousand, three hundred sixty-five".