2808144 has 30 divisors (see below), whose sum is σ = 7859306. Its totient is φ = 936000.

The previous prime is 2808119. The next prime is 2808149. The reversal of 2808144 is 4418082.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 374544 = 1560^2 + 612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9607 + ... + 9894.

2^2808144 is an apocalyptic number.

2808144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2808144 is an abundant number, since it is smaller than the sum of its proper divisors (5051162).

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

2808144 is a wasteful number, since it uses less digits than its factorization.

2808144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19515 (or 19506 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 2808144 is about 1675.7517715939. The cubic root of 2808144 is about 141.0824928473.

The spelling of 2808144 in words is "two million, eight hundred eight thousand, one hundred forty-four".