3138528 has 24 divisors (see below), whose sum is σ = 8238888. Its totient is φ = 1046144.

The previous prime is 3138521. The next prime is 3138529. The reversal of 3138528 is 8258313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 3138495 and 3138504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16251 + ... + 16442.

It is an arithmetic number, because the mean of its divisors is an integer number (343287).

Almost surely, 2^3138528 is an apocalyptic number.

It is an amenable number.

3138528 is an abundant number, since it is smaller than the sum of its proper divisors (5100360).

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

3138528 is a wasteful number, since it uses less digits than its factorization.

3138528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32706 (or 32698 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 3138528 is about 1771.5891171488. The cubic root of 3138528 is about 146.4115491501.

It can be divided in two parts, 31385 and 28, that added together give a palindrome (31413).

The spelling of 3138528 in words is "three million, one hundred thirty-eight thousand, five hundred twenty-eight".