2743240 has 16 divisors (see below), whose sum is σ = 6172380. Its totient is φ = 1097280.

The previous prime is 2743229. The next prime is 2743243. The reversal of 2743240 is 423472.

2743240 = T₁₅₁ + T₁₅₂ + ... + T₂₇₀.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 125316 = 1618^2 + 354^2 .

It is not an unprimeable number, because it can be changed into a prime (2743243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34251 + ... + 34330.

2^2743240 is an apocalyptic number.

2743240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2743240 is an abundant number, since it is smaller than the sum of its proper divisors (3429140).

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

2743240 is a wasteful number, since it uses less digits than its factorization.

2743240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68592 (or 68588 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2743240 is about 1656.2729243697. The cubic root of 2743240 is about 139.9870736365.

It can be divided in two parts, 27432 and 40, that added together give a palindrome (27472).

The spelling of 2743240 in words is "two million, seven hundred forty-three thousand, two hundred forty".