2011382780 has 48 divisors (see below), whose sum is σ = 4612809600. Its totient is φ = 730632000.

The previous prime is 2011382773. The next prime is 2011382801. The reversal of 2011382780 is 872831102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226871 + ... + 235569.

It is an arithmetic number, because the mean of its divisors is an integer number (96100200).

Almost surely, 2^2011382780 is an apocalyptic number.

2011382780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011382780 is an abundant number, since it is smaller than the sum of its proper divisors (2601426820).

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

2011382780 is a wasteful number, since it uses less digits than its factorization.

2011382780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9770 (or 9768 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2011382780 is about 44848.4423363844. The cubic root of 2011382780 is about 1262.3067636152.

The spelling of 2011382780 in words is "two billion, eleven million, three hundred eighty-two thousand, seven hundred eighty".