2585428 has 24 divisors (see below), whose sum is σ = 4839912. Its totient is φ = 1204224.

The previous prime is 2585417. The next prime is 2585447. The reversal of 2585428 is 8245852.

It can be written as a sum of positive squares in 4 ways, for example, as 1140624 + 1444804 = 1068^2 + 1202^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2585393 and 2585402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13026 + ... + 13222.

It is an arithmetic number, because the mean of its divisors is an integer number (201663).

2^2585428 is an apocalyptic number.

It is an amenable number.

2585428 is a deficient number, since it is larger than the sum of its proper divisors (2254484).

2585428 is a wasteful number, since it uses less digits than its factorization.

2585428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its digits is 25600, while the sum is 34.

The square root of 2585428 is about 1607.9266152409. The cubic root of 2585428 is about 137.2495142113.

The spelling of 2585428 in words is "two million, five hundred eighty-five thousand, four hundred twenty-eight".