556289280 has 216 divisors, whose sum is σ = 1971217248. Its totient is φ = 144764928.

The previous prime is 556289269. The next prime is 556289291. The reversal of 556289280 is 82982655.

556289280 is a `hidden beast` number, since 5 + 562 + 8 + 9 + 2 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (556289269) and next prime (556289291).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494799 + ... + 495921.

Almost surely, 2^556289280 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 556289280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985608624).

556289280 is an abundant number, since it is smaller than the sum of its proper divisors (1414927968).

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

556289280 is a wasteful number, since it uses less digits than its factorization.

556289280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 556289280 is about 23585.7855497755. The cubic root of 556289280 is about 822.4324362544.

The spelling of 556289280 in words is "five hundred fifty-six million, two hundred eighty-nine thousand, two hundred eighty".