2291340 has 24 divisors (see below), whose sum is σ = 6415920. Its totient is φ = 611008.

The previous prime is 2291327. The next prime is 2291347. The reversal of 2291340 is 431922.

2291340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2291347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19035 + ... + 19154.

It is an arithmetic number, because the mean of its divisors is an integer number (267330).

2^2291340 is an apocalyptic number.

2291340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291340 is an abundant number, since it is smaller than the sum of its proper divisors (4124580).

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

2291340 is a wasteful number, since it uses less digits than its factorization.

2291340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38201 (or 38199 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2291340 is about 1513.7172787545. The cubic root of 2291340 is about 131.8347334817.

The spelling of 2291340 in words is "two million, two hundred ninety-one thousand, three hundred forty".