2011552240 has 40 divisors (see below), whose sum is σ = 4690324800. Its totient is φ = 802304256.

The previous prime is 2011552219. The next prime is 2011552289. The reversal of 2011552240 is 422551102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8104 + ... + 63943.

It is an arithmetic number, because the mean of its divisors is an integer number (117258120).

Almost surely, 2^2011552240 is an apocalyptic number.

2011552240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011552240 is an abundant number, since it is smaller than the sum of its proper divisors (2678772560).

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

2011552240 is a wasteful number, since it uses less digits than its factorization.

2011552240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72409 (or 72403 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2011552240 is about 44850.3315483843. The cubic root of 2011552240 is about 1262.3422126107.

The spelling of 2011552240 in words is "two billion, eleven million, five hundred fifty-two thousand, two hundred forty".