2011040240 has 40 divisors (see below), whose sum is σ = 5100731568. Its totient is φ = 731287040.

The previous prime is 2011040231. The next prime is 2011040249. The reversal of 2011040240 is 420401102.

It is an interprime number because it is at equal distance from previous prime (2011040231) and next prime (2011040249).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011040249) 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, 1141757 + ... + 1143516.

Almost surely, 2^2011040240 is an apocalyptic number.

2011040240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011040240 is an abundant number, since it is smaller than the sum of its proper divisors (3089691328).

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

2011040240 is a wasteful number, since it uses less digits than its factorization.

2011040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285297 (or 2285291 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2011040240 is about 44844.6233120538. The cubic root of 2011040240 is about 1262.2351022834.

Adding to 2011040240 its reverse (420401102), we get a palindrome (2431441342).

The spelling of 2011040240 in words is "two billion, eleven million, forty thousand, two hundred forty".