2722581780 has 24 divisors (see below), whose sum is σ = 7623229152. Its totient is φ = 726021792.

The previous prime is 2722581769. The next prime is 2722581781. The reversal of 2722581780 is 871852272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722581781) 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 7 ways as a sum of consecutive naturals, for example, 22688122 + ... + 22688241.

It is an arithmetic number, because the mean of its divisors is an integer number (317634548).

Almost surely, 2^2722581780 is an apocalyptic number.

2722581780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2722581780 is an abundant number, since it is smaller than the sum of its proper divisors (4900647372).

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

2722581780 is a wasteful number, since it uses less digits than its factorization.

2722581780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45376375 (or 45376373 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 2722581780 is about 52178.3650567934. The cubic root of 2722581780 is about 1396.3479269784.

The spelling of 2722581780 in words is "two billion, seven hundred twenty-two million, five hundred eighty-one thousand, seven hundred eighty".