2844240 has 80 divisors (see below), whose sum is σ = 10082688. Its totient is φ = 649728.

The previous prime is 2844239. The next prime is 2844251. The reversal of 2844240 is 424482.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2844240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834 + ... + 2526.

2^2844240 is an apocalyptic number.

2844240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2844240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5041344).

2844240 is an abundant number, since it is smaller than the sum of its proper divisors (7238448).

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

2844240 is a wasteful number, since it uses less digits than its factorization.

2844240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 2844240 is about 1686.4874740122. The cubic root of 2844240 is about 141.6844145393.

It can be divided in two parts, 28442 and 40, that added together give a palindrome (28482).

The spelling of 2844240 in words is "two million, eight hundred forty-four thousand, two hundred forty".