2539128 has 32 divisors (see below), whose sum is σ = 6485760. Its totient is φ = 828000.

The previous prime is 2539123. The next prime is 2539151. The reversal of 2539128 is 8219352.

It is a happy number.

It is a Smith number, since the sum of its digits (30) 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 = 2539095 and 2539104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (202680).

2^2539128 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 2539128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3242880).

2539128 is an abundant number, since it is smaller than the sum of its proper divisors (3946632).

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

2539128 is a wasteful number, since it uses less digits than its factorization.

2539128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307 (or 2303 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 2539128 is about 1593.4641508362. The cubic root of 2539128 is about 136.4252834800.

The spelling of 2539128 in words is "two million, five hundred thirty-nine thousand, one hundred twenty-eight".