2055720380 has 96 divisors (see below), whose sum is σ = 5029516800. Its totient is φ = 691276032.

The previous prime is 2055720343. The next prime is 2055720437. The reversal of 2055720380 is 830275502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1632191 + ... + 1633449.

It is an arithmetic number, because the mean of its divisors is an integer number (52390800).

Almost surely, 2^2055720380 is an apocalyptic number.

2055720380 is a gapful number since it is divisible by the number (20) 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 2055720380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2514758400).

2055720380 is an abundant number, since it is smaller than the sum of its proper divisors (2973796420).

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

2055720380 is a wasteful number, since it uses less digits than its factorization.

2055720380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2055720380 is about 45340.0527128057. The cubic root of 2055720380 is about 1271.5145879007.

Adding to 2055720380 its reverse (830275502), we get a palindrome (2885995882).

The spelling of 2055720380 in words is "two billion, fifty-five million, seven hundred twenty thousand, three hundred eighty".