2788278838 has 8 divisors (see below), whose sum is σ = 4198693032. Its totient is φ = 1388714496.

The previous prime is 2788278809. The next prime is 2788278847. The reversal of 2788278838 is 8388728872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 2711820 + ... + 2712847.

It is an arithmetic number, because the mean of its divisors is an integer number (524836629).

Almost surely, 2^2788278838 is an apocalyptic number.

2788278838 is a deficient number, since it is larger than the sum of its proper divisors (1410414194).

2788278838 is a wasteful number, since it uses less digits than its factorization.

2788278838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424926.

The product of its digits is 19267584, while the sum is 61.

The square root of 2788278838 is about 52804.1554993544. The cubic root of 2788278838 is about 1407.4902687813.

The spelling of 2788278838 in words is "two billion, seven hundred eighty-eight million, two hundred seventy-eight thousand, eight hundred thirty-eight".