2440728 has 48 divisors (see below), whose sum is σ = 6692400. Its totient is φ = 803520.

The previous prime is 2440709. The next prime is 2440733. The reversal of 2440728 is 8270442.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7693 + ... + 8003.

It is an arithmetic number, because the mean of its divisors is an integer number (139425).

2^2440728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2440728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3346200).

2440728 is an abundant number, since it is smaller than the sum of its proper divisors (4251672).

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

2440728 is a wasteful number, since it uses less digits than its factorization.

2440728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 2440728 is about 1562.2829449239. The cubic root of 2440728 is about 134.6396976786.

The spelling of 2440728 in words is "two million, four hundred forty thousand, seven hundred twenty-eight".