2028440611 has 4 divisors (see below), whose sum is σ = 2058715912. Its totient is φ = 1998165312.

The previous prime is 2028440599. The next prime is 2028440621. The reversal of 2028440611 is 1160448202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2028440611 is a prime.

It is a super-2 number, since 2×2028440611² = 8229142624708106642, which contains 22 as substring.

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 2028440611.

It is not an unprimeable number, because it can be changed into a prime (2028440621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15137550 + ... + 15137683.

It is an arithmetic number, because the mean of its divisors is an integer number (514678978).

Almost surely, 2^2028440611 is an apocalyptic number.

2028440611 is a deficient number, since it is larger than the sum of its proper divisors (30275301).

2028440611 is an equidigital number, since it uses as much as digits as its factorization.

2028440611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30275300.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2028440611 is about 45038.2127864772. The cubic root of 2028440611 is about 1265.8651168994.

Adding to 2028440611 its reverse (1160448202), we get a palindrome (3188888813).

The spelling of 2028440611 in words is "two billion, twenty-eight million, four hundred forty thousand, six hundred eleven".