556426380 has 24 divisors (see below), whose sum is σ = 1557994032. Its totient is φ = 148380352.

The previous prime is 556426379. The next prime is 556426411. The reversal of 556426380 is 83624655.

It is a super-2 number, since 2×556426380² = 619220632719808800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4636827 + ... + 4636946.

It is an arithmetic number, because the mean of its divisors is an integer number (64916418).

Almost surely, 2^556426380 is an apocalyptic number.

It is an amenable number.

556426380 is an abundant number, since it is smaller than the sum of its proper divisors (1001567652).

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

556426380 is a wasteful number, since it uses less digits than its factorization.

556426380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273785 (or 9273783 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 556426380 is about 23588.6917822926. The cubic root of 556426380 is about 822.4999947648.

The spelling of 556426380 in words is "five hundred fifty-six million, four hundred twenty-six thousand, three hundred eighty".