2605428 has 72 divisors (see below), whose sum is σ = 7716800. Its totient is φ = 740880.

The previous prime is 2605411. The next prime is 2605433. The reversal of 2605428 is 8245062.

2605428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12243 + ... + 12453.

2^2605428 is an apocalyptic number.

2605428 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 2605428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3858400).

2605428 is an abundant number, since it is smaller than the sum of its proper divisors (5111372).

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

2605428 is a wasteful number, since it uses less digits than its factorization.

2605428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2605428 is about 1614.1338234484. The cubic root of 2605428 is about 137.6025108835.

The spelling of 2605428 in words is "two million, six hundred five thousand, four hundred twenty-eight".