2788622213 has 4 divisors (see below), whose sum is σ = 3003131628. Its totient is φ = 2574112800.

The previous prime is 2788622203. The next prime is 2788622219. The reversal of 2788622213 is 3122268872.

It is a happy number.

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 1786076644 + 1002545569 = 42262^2 + 31663^2 .

It is a cyclic number.

It is not a de Polignac number, because 2788622213 - 2¹⁰ = 2788621189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788622219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107254688 + ... + 107254713.

It is an arithmetic number, because the mean of its divisors is an integer number (750782907).

Almost surely, 2^2788622213 is an apocalyptic number.

It is an amenable number.

2788622213 is a deficient number, since it is larger than the sum of its proper divisors (214509415).

2788622213 is a wasteful number, since it uses less digits than its factorization.

2788622213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214509414.

The product of its digits is 129024, while the sum is 41.

The square root of 2788622213 is about 52807.4068005616. The cubic root of 2788622213 is about 1407.5480436263.

The spelling of 2788622213 in words is "two billion, seven hundred eighty-eight million, six hundred twenty-two thousand, two hundred thirteen".