2001787632 has 120 divisors (see below), whose sum is σ = 6118545888. Its totient is φ = 607219200.

The previous prime is 2001787607. The next prime is 2001787637. The reversal of 2001787632 is 2367871002.

2001787632 is a `hidden beast` number, since 2 + 0 + 0 + 17 + 8 + 7 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001787637) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 125382 + ... + 140442.

Almost surely, 2^2001787632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001787632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059272944).

2001787632 is an abundant number, since it is smaller than the sum of its proper divisors (4116758256).

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

2001787632 is a wasteful number, since it uses less digits than its factorization.

2001787632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159 (or 15150 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 2001787632 is about 44741.3414193182. The cubic root of 2001787632 is about 1260.2963173081.

The spelling of 2001787632 in words is "two billion, one million, seven hundred eighty-seven thousand, six hundred thirty-two".