2788668940 has 12 divisors (see below), whose sum is σ = 5856204816. Its totient is φ = 1115467568.

The previous prime is 2788668901. The next prime is 2788668977. The reversal of 2788668940 is 498668872.

2788668940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69716704 + ... + 69716743.

It is an arithmetic number, because the mean of its divisors is an integer number (488017068).

Almost surely, 2^2788668940 is an apocalyptic number.

2788668940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2788668940 is an abundant number, since it is smaller than the sum of its proper divisors (3067535876).

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

2788668940 is a wasteful number, since it uses less digits than its factorization.

2788668940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139433456 (or 139433454 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 58.

The square root of 2788668940 is about 52807.8492271746. The cubic root of 2788668940 is about 1407.5559053498. Note that the first 3 decimals are identical.

The spelling of 2788668940 in words is "two billion, seven hundred eighty-eight million, six hundred sixty-eight thousand, nine hundred forty".