2730240 has 144 divisors (see below), whose sum is σ = 9811200. Its totient is φ = 718848.

The previous prime is 2730239. The next prime is 2730241. The reversal of 2730240 is 420372.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2730239) and next prime (2730241).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2730241) 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 15 ways as a sum of consecutive naturals, for example, 34521 + ... + 34599.

2^2730240 is an apocalyptic number.

2730240 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 2730240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4905600).

2730240 is an abundant number, since it is smaller than the sum of its proper divisors (7080960).

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

2730240 is an equidigital number, since it uses as much as digits as its factorization.

2730240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2730240 is about 1652.3437898936. The cubic root of 2730240 is about 139.7655941414.

The spelling of 2730240 in words is "two million, seven hundred thirty thousand, two hundred forty".