556446330 has 144 divisors (see below), whose sum is σ = 1634402952. Its totient is φ = 131155200.

The previous prime is 556446313. The next prime is 556446361. The reversal of 556446330 is 33644655.

556446330 is a `hidden beast` number, since 5 + 5 + 644 + 6 + 3 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 519976809 + 36469521 = 22803^2 + 6039^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 402240 + ... + 403620.

Almost surely, 2^556446330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556446330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817201476).

556446330 is an abundant number, since it is smaller than the sum of its proper divisors (1077956622).

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

556446330 is a wasteful number, since it uses less digits than its factorization.

556446330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 556446330 is about 23589.1146506180. The cubic root of 556446330 is about 822.5098245640.

The spelling of 556446330 in words is "five hundred fifty-six million, four hundred forty-six thousand, three hundred thirty".