2744440 has 16 divisors (see below), whose sum is σ = 6175080. Its totient is φ = 1097760.

The previous prime is 2744419. The next prime is 2744447. The reversal of 2744440 is 444472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2744447) 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, 34266 + ... + 34345.

2^2744440 is an apocalyptic number.

2744440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2744440 is an abundant number, since it is smaller than the sum of its proper divisors (3430640).

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

2744440 is a wasteful number, since it uses less digits than its factorization.

2744440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68622 (or 68618 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 2744440 is about 1656.6351438986. The cubic root of 2744440 is about 140.0074825933.

Subtracting from 2744440 its reverse (444472), we obtain a cube (2299968 = 132³).

The spelling of 2744440 in words is "two million, seven hundred forty-four thousand, four hundred forty".