2405728 has 24 divisors (see below), whose sum is σ = 5101488. Its totient is φ = 1110144.

The previous prime is 2405707. The next prime is 2405729. The reversal of 2405728 is 8275042.

It is a junction number, because it is equal to n+sod(n) for n = 2405696 and 2405705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405729) 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, 2476 + ... + 3307.

It is an arithmetic number, because the mean of its divisors is an integer number (212562).

2^2405728 is an apocalyptic number.

It is an amenable number.

2405728 is an abundant number, since it is smaller than the sum of its proper divisors (2695760).

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

2405728 is a wasteful number, since it uses less digits than its factorization.

2405728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806 (or 5798 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2405728 is about 1551.0409407878. The cubic root of 2405728 is about 133.9930196111.

The spelling of 2405728 in words is "two million, four hundred five thousand, seven hundred twenty-eight".