2239808 has 28 divisors (see below), whose sum is σ = 4511040. Its totient is φ = 1103232.

The previous prime is 2239807. The next prime is 2239847. The reversal of 2239808 is 8089322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4835 + ... + 5277.

2^2239808 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 2239808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255520).

2239808 is an abundant number, since it is smaller than the sum of its proper divisors (2271232).

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

2239808 is an equidigital number, since it uses as much as digits as its factorization.

2239808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2239808 is about 1496.5988106370. The cubic root of 2239808 is about 130.8389139392.

The spelling of 2239808 in words is "two million, two hundred thirty-nine thousand, eight hundred eight".