2748440 has 16 divisors (see below), whose sum is σ = 6184080. Its totient is φ = 1099360.

The previous prime is 2748439. The next prime is 2748443. The reversal of 2748440 is 448472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748443) 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, 34316 + ... + 34395.

It is an arithmetic number, because the mean of its divisors is an integer number (386505).

2^2748440 is an apocalyptic number.

2748440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2748440 is an abundant number, since it is smaller than the sum of its proper divisors (3435640).

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

2748440 is a wasteful number, since it uses less digits than its factorization.

2748440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68722 (or 68718 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 2748440 is about 1657.8419707560. The cubic root of 2748440 is about 140.0754695136.

Subtracting from 2748440 its reverse (448472), we obtain a cube (2299968 = 132³).

The spelling of 2748440 in words is "two million, seven hundred forty-eight thousand, four hundred forty".