2478538 has 4 divisors (see below), whose sum is σ = 3717810. Its totient is φ = 1239268.

The previous prime is 2478529. The next prime is 2478547. The reversal of 2478538 is 8358742.

2478538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2478529) and next prime (2478547).

It can be written as a sum of positive squares in only one way, i.e., 2424249 + 54289 = 1557^2 + 233^2 .

It is a super-2 number, since 2×2478538² = 12286301234888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478497 and 2478506.

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 as a sum of consecutive naturals, namely, 619633 + ... + 619636.

2^2478538 is an apocalyptic number.

2478538 is a deficient number, since it is larger than the sum of its proper divisors (1239272).

2478538 is a wasteful number, since it uses less digits than its factorization.

2478538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239271.

The product of its digits is 53760, while the sum is 37.

The square root of 2478538 is about 1574.3373209068. The cubic root of 2478538 is about 135.3313852411.

The spelling of 2478538 in words is "two million, four hundred seventy-eight thousand, five hundred thirty-eight".