2528409 has 12 divisors (see below), whose sum is σ = 3651216. Its totient is φ = 1555632.

The previous prime is 2528399. The next prime is 2528411. The reversal of 2528409 is 9048252.

It is not a de Polignac number, because 2528409 - 2⁵ = 2528377 is a prime.

It is a Curzon number.

2528409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2528419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1987 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (304268).

2^2528409 is an apocalyptic number.

It is an amenable number.

2528409 is a deficient number, since it is larger than the sum of its proper divisors (1122807).

2528409 is a wasteful number, since it uses less digits than its factorization.

2528409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5003 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2528409 is about 1590.0971668423. The cubic root of 2528409 is about 136.2330383172.

The spelling of 2528409 in words is "two million, five hundred twenty-eight thousand, four hundred nine".