2778230784 has 104 divisors (see below), whose sum is σ = 8466217600. Its totient is φ = 793755648.

The previous prime is 2778230761. The next prime is 2778230813. The reversal of 2778230784 is 4870328772.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69867 + ... + 102165.

Almost surely, 2^2778230784 is an apocalyptic number.

2778230784 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 2778230784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4233108800).

2778230784 is an abundant number, since it is smaller than the sum of its proper divisors (5687986816).

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

2778230784 is an equidigital number, since it uses as much as digits as its factorization.

2778230784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32333 (or 32311 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 48.

The square root of 2778230784 is about 52708.9250886413. The cubic root of 2778230784 is about 1405.7975207317.

The spelling of 2778230784 in words is "two billion, seven hundred seventy-eight million, two hundred thirty thousand, seven hundred eighty-four".