4538556 has 72 divisors (see below), whose sum is σ = 12767664. Its totient is φ = 1347840.

The previous prime is 4538543. The next prime is 4538557. The reversal of 4538556 is 6558354.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 4538556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4538557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28830 + ... + 28986.

Almost surely, 2^4538556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4538556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6383832).

4538556 is an abundant number, since it is smaller than the sum of its proper divisors (8229108).

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

4538556 is a wasteful number, since it uses less digits than its factorization.

4538556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 246 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 4538556 is about 2130.3886969283. The cubic root of 4538556 is about 165.5665373821.

It can be divided in two parts, 453 and 8556, that added together give a palindrome (9009).

The spelling of 4538556 in words is "four million, five hundred thirty-eight thousand, five hundred fifty-six".