2001550240 has 48 divisors (see below), whose sum is σ = 4838647968. Its totient is φ = 781998336.

The previous prime is 2001550237. The next prime is 2001550253. The reversal of 2001550240 is 420551002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138582 + ... + 152341.

It is an arithmetic number, because the mean of its divisors is an integer number (100805166).

Almost surely, 2^2001550240 is an apocalyptic number.

2001550240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001550240 is an abundant number, since it is smaller than the sum of its proper divisors (2837097728).

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

2001550240 is a wasteful number, since it uses less digits than its factorization.

2001550240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290981 (or 290973 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2001550240 is about 44738.6884027684. The cubic root of 2001550240 is about 1260.2464958242.

The spelling of 2001550240 in words is "two billion, one million, five hundred fifty thousand, two hundred forty".