2788938684 has 108 divisors (see below), whose sum is σ = 8465515968. Its totient is φ = 771120000.

The previous prime is 2788938683. The next prime is 2788938703. The reversal of 2788938684 is 4868398872.

It is a super-2 number, since 2×2788938684² = 15556357966223303712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788938683) 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 35 ways as a sum of consecutive naturals, for example, 29184 + ... + 80184.

Almost surely, 2^2788938684 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 2788938684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4232757984).

2788938684 is an abundant number, since it is smaller than the sum of its proper divisors (5676577284).

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

2788938684 is a wasteful number, since it uses less digits than its factorization.

2788938684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51056 (or 51044 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The square root of 2788938684 is about 52810.4031796766. The cubic root of 2788938684 is about 1407.6012875168.

The spelling of 2788938684 in words is "two billion, seven hundred eighty-eight million, nine hundred thirty-eight thousand, six hundred eighty-four".