2788473278 has 4 divisors (see below), whose sum is σ = 4182709920. Its totient is φ = 1394236638.

The previous prime is 2788473271. The next prime is 2788473283. The reversal of 2788473278 is 8723748872.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788473271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697118318 + ... + 697118321.

It is an arithmetic number, because the mean of its divisors is an integer number (1045677480).

Almost surely, 2^2788473278 is an apocalyptic number.

2788473278 is a deficient number, since it is larger than the sum of its proper divisors (1394236642).

2788473278 is a wasteful number, since it uses less digits than its factorization.

2788473278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394236641.

The product of its digits is 8429568, while the sum is 56.

The square root of 2788473278 is about 52805.9966102336. The cubic root of 2788473278 is about 1407.5229850270.

The spelling of 2788473278 in words is "two billion, seven hundred eighty-eight million, four hundred seventy-three thousand, two hundred seventy-eight".