2291850 has 72 divisors (see below), whose sum is σ = 6731712. Its totient is φ = 554400.

The previous prime is 2291827. The next prime is 2291851. The reversal of 2291850 is 581922.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2291851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4719 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (93496).

2^2291850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3365856).

2291850 is an abundant number, since it is smaller than the sum of its proper divisors (4439862).

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

2291850 is a wasteful number, since it uses less digits than its factorization.

2291850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2291850 is about 1513.8857288448. The cubic root of 2291850 is about 131.8445138906.

The spelling of 2291850 in words is "two million, two hundred ninety-one thousand, eight hundred fifty".