2001002240 has 36 divisors (see below), whose sum is σ = 4793028744. Its totient is φ = 800400384.

The previous prime is 2001002239. The next prime is 2001002243. The reversal of 2001002240 is 422001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001002243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780362 + ... + 782921.

Almost surely, 2^2001002240 is an apocalyptic number.

2001002240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001002240 is an abundant number, since it is smaller than the sum of its proper divisors (2792026504).

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

2001002240 is an equidigital number, since it uses as much as digits as its factorization.

2001002240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563304 (or 1563290 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2001002240 is about 44732.5635303858. The cubic root of 2001002240 is about 1260.1314719621.

Adding to 2001002240 its reverse (422001002), we get a palindrome (2423003242).

The spelling of 2001002240 in words is "two billion, one million, two thousand, two hundred forty".