556297280 has 224 divisors, whose sum is σ = 1674888192. Its totient is φ = 170956800.

The previous prime is 556297279. The next prime is 556297309. The reversal of 556297280 is 82792655.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2636375 + ... + 2636585.

Almost surely, 2^556297280 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 556297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837444096).

556297280 is an abundant number, since it is smaller than the sum of its proper divisors (1118590912).

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

556297280 is a wasteful number, since it uses less digits than its factorization.

556297280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 556297280 is about 23585.9551428387. The cubic root of 556297280 is about 822.4363787044.

The spelling of 556297280 in words is "five hundred fifty-six million, two hundred ninety-seven thousand, two hundred eighty".