2001980520 has 192 divisors, whose sum is σ = 6915514320. Its totient is φ = 500539392.

The previous prime is 2001980483. The next prime is 2001980567. The reversal of 2001980520 is 250891002.

It can be written as a sum of positive squares in 8 ways, for example, as 1544961636 + 457018884 = 39306^2 + 21378^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2282322 + ... + 2283198.

Almost surely, 2^2001980520 is an apocalyptic number.

2001980520 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 2001980520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3457757160).

2001980520 is an abundant number, since it is smaller than the sum of its proper divisors (4913533800).

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

2001980520 is a wasteful number, since it uses less digits than its factorization.

2001980520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2001980520 is about 44743.4969576586. The cubic root of 2001980520 is about 1260.3367958325.

The spelling of 2001980520 in words is "two billion, one million, nine hundred eighty thousand, five hundred twenty".