2578242 has 16 divisors (see below), whose sum is σ = 5173632. Its totient is φ = 856560.

The previous prime is 2578217. The next prime is 2578249. The reversal of 2578242 is 2428752.

2578242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹¹ + 5⁸ + 7⁴ + 8⁴ + 2¹⁶ + 4⁷ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2578249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2088 + ... + 3084.

It is an arithmetic number, because the mean of its divisors is an integer number (323352).

2^2578242 is an apocalyptic number.

2578242 is an abundant number, since it is smaller than the sum of its proper divisors (2595390).

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

2578242 is a wasteful number, since it uses less digits than its factorization.

2578242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its digits is 8960, while the sum is 30.

The square root of 2578242 is about 1605.6905056704. The cubic root of 2578242 is about 137.1222380336.

The spelling of 2578242 in words is "two million, five hundred seventy-eight thousand, two hundred forty-two".