2528389 has 8 divisors (see below), whose sum is σ = 2595320. Its totient is φ = 2462400.

The previous prime is 2528377. The next prime is 2528399. The reversal of 2528389 is 9838252.

It can be written as a sum of positive squares in 4 ways, for example, as 289 + 2528100 = 17^2 + 1590^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2528389 - 2⁷ = 2528261 is a prime.

It is a d-powerful number, because it can be written as 2⁸ + 5⁸ + 2¹⁰ + 8⁵ + 3 + 8⁷ + 9⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10927 + ... + 11155.

It is an arithmetic number, because the mean of its divisors is an integer number (324415).

2^2528389 is an apocalyptic number.

It is an amenable number.

2528389 is a deficient number, since it is larger than the sum of its proper divisors (66931).

2528389 is a wasteful number, since it uses less digits than its factorization.

2528389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its digits is 34560, while the sum is 37.

The square root of 2528389 is about 1590.0908779060. The cubic root of 2528389 is about 136.2326791101.

The spelling of 2528389 in words is "two million, five hundred twenty-eight thousand, three hundred eighty-nine".