2788113636 has 480 divisors, whose sum is σ = 9788663808. Its totient is φ = 670602240.

The previous prime is 2788113607. The next prime is 2788113661. The reversal of 2788113636 is 6363118872.

2788113636 is a `hidden beast` number, since 2 + 7 + 8 + 8 + 1 + 1 + 3 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2788113591 and 2788113600.

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 159 ways as a sum of consecutive naturals, for example, 24673516 + ... + 24673628.

Almost surely, 2^2788113636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2788113636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4894331904).

2788113636 is an abundant number, since it is smaller than the sum of its proper divisors (7000550172).

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

2788113636 is a wasteful number, since it uses less digits than its factorization.

2788113636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 202 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 2788113636 is about 52802.5911864181. The cubic root of 2788113636 is about 1407.4624708920.

The spelling of 2788113636 in words is "two billion, seven hundred eighty-eight million, one hundred thirteen thousand, six hundred thirty-six".