2291824 has 10 divisors (see below), whose sum is σ = 4440440. Its totient is φ = 1145904.

The previous prime is 2291803. The next prime is 2291827. The reversal of 2291824 is 4281922.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2291792 and 2291801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71604 + ... + 71635.

It is an arithmetic number, because the mean of its divisors is an integer number (444044).

2^2291824 is an apocalyptic number.

It is an amenable number.

2291824 is a deficient number, since it is larger than the sum of its proper divisors (2148616).

2291824 is a wasteful number, since it uses less digits than its factorization.

2291824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143247 (or 143241 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2291824 is about 1513.8771416466. The cubic root of 2291824 is about 131.8440153166.

The spelling of 2291824 in words is "two million, two hundred ninety-one thousand, eight hundred twenty-four".