2724356778 has 64 divisors (see below), whose sum is σ = 6423725952. Its totient is φ = 759386880.

The previous prime is 2724356759. The next prime is 2724356779. The reversal of 2724356778 is 8776534272.

It is a self number, because there is not a number n which added to its sum of digits gives 2724356778.

It is not an unprimeable number, because it can be changed into a prime (2724356779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245976 + ... + 256812.

It is an arithmetic number, because the mean of its divisors is an integer number (100370718).

Almost surely, 2^2724356778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2724356778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3211862976).

2724356778 is an abundant number, since it is smaller than the sum of its proper divisors (3699369174).

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

2724356778 is a wasteful number, since it uses less digits than its factorization.

2724356778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159.

The product of its digits is 3951360, while the sum is 51.

The square root of 2724356778 is about 52195.3712315565. The cubic root of 2724356778 is about 1396.6513125816.

The spelling of 2724356778 in words is "two billion, seven hundred twenty-four million, three hundred fifty-six thousand, seven hundred seventy-eight".