2291456 has 18 divisors (see below), whose sum is σ = 4574472. Its totient is φ = 1145600.

The previous prime is 2291437. The next prime is 2291459. The reversal of 2291456 is 6541922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220 + ... + 4731.

2^2291456 is an apocalyptic number.

It is an amenable number.

2291456 is a deficient number, since it is larger than the sum of its proper divisors (2283016).

2291456 is an frugal number, since it uses more digits than its factorization.

2291456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8967 (or 8953 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 2291456 is about 1513.7555945396. The cubic root of 2291456 is about 131.8369581728.

The spelling of 2291456 in words is "two million, two hundred ninety-one thousand, four hundred fifty-six".