2001010240 has 28 divisors (see below), whose sum is σ = 4764906396. Its totient is φ = 800403968.

The previous prime is 2001010169. The next prime is 2001010247. The reversal of 2001010240 is 420101002.

It can be written as a sum of positive squares in 2 ways, for example, as 1170187264 + 830822976 = 34208^2 + 28824^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2001010247) 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, 3126259 + ... + 3126898.

Almost surely, 2^2001010240 is an apocalyptic number.

2001010240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001010240 is an abundant number, since it is smaller than the sum of its proper divisors (2763896156).

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

2001010240 is an equidigital number, since it uses as much as digits as its factorization.

2001010240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253174 (or 6253164 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001010240 is about 44732.6529506132. The cubic root of 2001010240 is about 1260.1331512936.

Adding to 2001010240 its reverse (420101002), we get a palindrome (2421111242).

The spelling of 2001010240 in words is "two billion, one million, ten thousand, two hundred forty".