2499728 has 40 divisors (see below), whose sum is σ = 6041280. Its totient is φ = 973440.

The previous prime is 2499727. The next prime is 2499751. The reversal of 2499728 is 8279942.

It is not an unprimeable number, because it can be changed into a prime (2499727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (151032).

2^2499728 is an apocalyptic number.

2499728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3020640).

2499728 is an abundant number, since it is smaller than the sum of its proper divisors (3541552).

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

2499728 is a wasteful number, since it uses less digits than its factorization.

2499728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2049 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 2499728 is about 1581.0528137921. The cubic root of 2499728 is about 135.7159585073.

The spelling of 2499728 in words is "two million, four hundred ninety-nine thousand, seven hundred twenty-eight".