2028702245 has 6 divisors (see below), whose sum is σ = 2434563558. Its totient is φ = 1622881224.

The previous prime is 2028702239. The next prime is 2028702283. The reversal of 2028702245 is 5422078202.

It can be written as a sum of positive squares in only one way, i.e., 1622961796 + 405740449 = 40286^2 + 20143^2 .

It is not a de Polignac number, because 2028702245 - 2¹⁰ = 2028701221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90644 + ... + 110786.

It is an arithmetic number, because the mean of its divisors is an integer number (405760593).

Almost surely, 2^2028702245 is an apocalyptic number.

It is an amenable number.

2028702245 is a deficient number, since it is larger than the sum of its proper divisors (405861313).

2028702245 is an frugal number, since it uses more digits than its factorization.

2028702245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40291 (or 20148 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 2028702245 is about 45041.1172707783. The cubic root of 2028702245 is about 1265.9195395125.

The spelling of 2028702245 in words is "two billion, twenty-eight million, seven hundred two thousand, two hundred forty-five".