2291610240 has 96 divisors (see below), whose sum is σ = 7913236500. Its totient is φ = 611094528.

The previous prime is 2291610227. The next prime is 2291610257. The reversal of 2291610240 is 420161922.

2291610240 is a `hidden beast` number, since 2 + 2 + 9 + 1 + 610 + 2 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2116736064 + 174874176 = 46008^2 + 13224^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193165 + ... + 204684.

Almost surely, 2^2291610240 is an apocalyptic number.

2291610240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291610240 is an abundant number, since it is smaller than the sum of its proper divisors (5621626260).

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

2291610240 is a wasteful number, since it uses less digits than its factorization.

2291610240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397874 (or 397859 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2291610240 is about 47870.7660268770. The cubic root of 2291610240 is about 1318.3991612855.

The spelling of 2291610240 in words is "two billion, two hundred ninety-one million, six hundred ten thousand, two hundred forty".