2788426964 has 12 divisors (see below), whose sum is σ = 4880406804. Its totient is φ = 1394025024.

The previous prime is 2788426961. The next prime is 2788426987. The reversal of 2788426964 is 4696248872.

It can be written as a sum of positive squares in 2 ways, for example, as 380562064 + 2407864900 = 19508^2 + 49070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788426961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10697 + ... + 75440.

It is an arithmetic number, because the mean of its divisors is an integer number (406700567).

Almost surely, 2^2788426964 is an apocalyptic number.

It is an amenable number.

2788426964 is a deficient number, since it is larger than the sum of its proper divisors (2091979840).

2788426964 is a wasteful number, since it uses less digits than its factorization.

2788426964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94234 (or 94232 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 56.

The square root of 2788426964 is about 52805.5580786720. The cubic root of 2788426964 is about 1407.5151924258.

The spelling of 2788426964 in words is "two billion, seven hundred eighty-eight million, four hundred twenty-six thousand, nine hundred sixty-four".