2788248081 has 48 divisors (see below), whose sum is σ = 4212855360. Its totient is φ = 1630126080.

The previous prime is 2788248077. The next prime is 2788248101. The reversal of 2788248081 is 1808428872.

It is not a de Polignac number, because 2788248081 - 2² = 2788248077 is a prime.

It is a super-2 number, since 2×2788248081² = 15548654722400365122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2788248081.

It is not an unprimeable number, because it can be changed into a prime (2788248031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4349521 + ... + 4350161.

It is an arithmetic number, because the mean of its divisors is an integer number (87767820).

Almost surely, 2^2788248081 is an apocalyptic number.

It is an amenable number.

2788248081 is a deficient number, since it is larger than the sum of its proper divisors (1424607279).

2788248081 is a wasteful number, since it uses less digits than its factorization.

2788248081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 48.

The square root of 2788248081 is about 52803.8642620026. The cubic root of 2788248081 is about 1407.4850935053.

The spelling of 2788248081 in words is "two billion, seven hundred eighty-eight million, two hundred forty-eight thousand, eighty-one".