2520728 has 16 divisors (see below), whose sum is σ = 5401680. Its totient is φ = 1080288.

The previous prime is 2520697. The next prime is 2520769. The reversal of 2520728 is 8270252.

2520728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2520697 and 2520706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22451 + ... + 22562.

It is an arithmetic number, because the mean of its divisors is an integer number (337605).

2^2520728 is an apocalyptic number.

2520728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2520728 is an abundant number, since it is smaller than the sum of its proper divisors (2880952).

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

2520728 is a wasteful number, since it uses less digits than its factorization.

2520728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45026 (or 45022 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2520728 is about 1587.6800685277. The cubic root of 2520728 is about 136.0949452348.

The spelling of 2520728 in words is "two million, five hundred twenty thousand, seven hundred twenty-eight".