2578738 has 16 divisors (see below), whose sum is σ = 4040280. Its totient is φ = 1232896.

The previous prime is 2578733. The next prime is 2578757. The reversal of 2578738 is 8378752.

2578738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2486929 + 91809 = 1577^2 + 303^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2578738.

It is not an unprimeable number, because it can be changed into a prime (2578733) 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, 9906 + ... + 10162.

2^2578738 is an apocalyptic number.

2578738 is a deficient number, since it is larger than the sum of its proper divisors (1461542).

2578738 is a wasteful number, since it uses less digits than its factorization.

2578738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its digits is 94080, while the sum is 40.

The square root of 2578738 is about 1605.8449489288. The cubic root of 2578738 is about 137.1310306229.

The spelling of 2578738 in words is "two million, five hundred seventy-eight thousand, seven hundred thirty-eight".