556336220 has 72 divisors (see below), whose sum is σ = 1359811152. Its totient is φ = 190389760.

The previous prime is 556336219. The next prime is 556336223. The reversal of 556336220 is 22633655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556336223) 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, 34379 + ... + 47901.

It is an arithmetic number, because the mean of its divisors is an integer number (18886266).

Almost surely, 2^556336220 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 556336220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679905576).

556336220 is an abundant number, since it is smaller than the sum of its proper divisors (803474932).

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

556336220 is a wasteful number, since it uses less digits than its factorization.

556336220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571 (or 13558 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 556336220 is about 23586.7806196607. The cubic root of 556336220 is about 822.4555680398.

Adding to 556336220 its reverse (22633655), we get a palindrome (578969875).

The spelling of 556336220 in words is "five hundred fifty-six million, three hundred thirty-six thousand, two hundred twenty".