2291760 has 80 divisors (see below), whose sum is σ = 7901280. Its totient is φ = 610560.

The previous prime is 2291749. The next prime is 2291797. The reversal of 2291760 is 671922.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (98766).

2^2291760 is an apocalyptic number.

2291760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3950640).

2291760 is an abundant number, since it is smaller than the sum of its proper divisors (5609520).

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

2291760 is a wasteful number, since it uses less digits than its factorization.

2291760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2291760 is about 1513.8560037203. The cubic root of 2291760 is about 131.8427880416.

The spelling of 2291760 in words is "two million, two hundred ninety-one thousand, seven hundred sixty".