4568538 has 32 divisors (see below), whose sum is σ = 10112256. Its totient is φ = 1366848.

The previous prime is 4568537. The next prime is 4568567. The reversal of 4568538 is 8358654.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4568496 and 4568505.

It is not an unprimeable number, because it can be changed into a prime (4568537) 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 15 ways as a sum of consecutive naturals, for example, 2095 + ... + 3677.

It is an arithmetic number, because the mean of its divisors is an integer number (316008).

Almost surely, 2^4568538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4568538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5056128).

4568538 is an abundant number, since it is smaller than the sum of its proper divisors (5543718).

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

4568538 is a wasteful number, since it uses less digits than its factorization.

4568538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638.

The product of its digits is 115200, while the sum is 39.

The square root of 4568538 is about 2137.4138579133. The cubic root of 4568538 is about 165.9303186518.

The spelling of 4568538 in words is "four million, five hundred sixty-eight thousand, five hundred thirty-eight".