556772280 has 64 divisors (see below), whose sum is σ = 1677693600. Its totient is φ = 147816960.

The previous prime is 556772267. The next prime is 556772309. The reversal of 556772280 is 82277655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17350 + ... + 37610.

Almost surely, 2^556772280 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 556772280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838846800).

556772280 is an abundant number, since it is smaller than the sum of its proper divisors (1120921320).

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

556772280 is a wasteful number, since it uses less digits than its factorization.

556772280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20504 (or 20500 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 556772280 is about 23596.0225461835. The cubic root of 556772280 is about 822.6703939559.

The spelling of 556772280 in words is "five hundred fifty-six million, seven hundred seventy-two thousand, two hundred eighty".