2001288 has 32 divisors (see below), whose sum is σ = 5088960. Its totient is φ = 655680.

The previous prime is 2001281. The next prime is 2001313. The reversal of 2001288 is 8821002.

It is not an unprimeable number, because it can be changed into a prime (2001281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (159030).

2^2001288 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 2001288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544480).

2001288 is an abundant number, since it is smaller than the sum of its proper divisors (3087672).

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

2001288 is a wasteful number, since it uses less digits than its factorization.

2001288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2001288 is about 1414.6688658481. The cubic root of 2001288 is about 126.0191454908.

It can be divided in two parts, 20012 and 88, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 2001288 in words is "two million, one thousand, two hundred eighty-eight".