2291928 has 64 divisors (see below), whose sum is σ = 6156000. Its totient is φ = 709632.

The previous prime is 2291921. The next prime is 2291929. The reversal of 2291928 is 8291922.

It is a happy number.

2291928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291921) 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 15 ways as a sum of consecutive naturals, for example, 25708 + ... + 25796.

2^2291928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078000).

2291928 is an abundant number, since it is smaller than the sum of its proper divisors (3864072).

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

2291928 is a wasteful number, since it uses less digits than its factorization.

2291928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 160 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 2291928 is about 1513.9114901473. The cubic root of 2291928 is about 131.8460095899.

The spelling of 2291928 in words is "two million, two hundred ninety-one thousand, nine hundred twenty-eight".