2778487344 has 480 divisors, whose sum is σ = 9359400960. Its totient is φ = 763084800.

The previous prime is 2778487343. The next prime is 2778487399. The reversal of 2778487344 is 4437848772.

It is not an unprimeable number, because it can be changed into a prime (2778487343) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59116729 + ... + 59116775.

It is an arithmetic number, because the mean of its divisors is an integer number (19498752).

Almost surely, 2^2778487344 is an apocalyptic number.

2778487344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2778487344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4679700480).

2778487344 is an abundant number, since it is smaller than the sum of its proper divisors (6580913616).

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

2778487344 is a wasteful number, since it uses less digits than its factorization.

2778487344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 160 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 54.

The square root of 2778487344 is about 52711.3587758843. The cubic root of 2778487344 is about 1405.8407929120.

The spelling of 2778487344 in words is "two billion, seven hundred seventy-eight million, four hundred eighty-seven thousand, three hundred forty-four".