2011983720 has 64 divisors (see below), whose sum is σ = 6353640000. Its totient is φ = 508290048.

The previous prime is 2011983713. The next prime is 2011983761. The reversal of 2011983720 is 273891102.

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, 438945 + ... + 443504.

It is an arithmetic number, because the mean of its divisors is an integer number (99275625).

Almost surely, 2^2011983720 is an apocalyptic number.

2011983720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011983720 is an abundant number, since it is smaller than the sum of its proper divisors (4341656280).

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

2011983720 is a wasteful number, since it uses less digits than its factorization.

2011983720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882482 (or 882478 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2011983720 is about 44855.1415113140. The cubic root of 2011983720 is about 1262.4324640539.

The spelling of 2011983720 in words is "two billion, eleven million, nine hundred eighty-three thousand, seven hundred twenty".