556243320 has 32 divisors (see below), whose sum is σ = 1668730320. Its totient is φ = 148331520.

The previous prime is 556243277. The next prime is 556243343. The reversal of 556243320 is 23342655.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2317561 + ... + 2317800.

Almost surely, 2^556243320 is an apocalyptic number.

It is an amenable number.

556243320 is an abundant number, since it is smaller than the sum of its proper divisors (1112487000).

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

556243320 is a wasteful number, since it uses less digits than its factorization.

556243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635375 (or 4635371 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 556243320 is about 23584.8112139996. The cubic root of 556243320 is about 822.4097861470.

Adding to 556243320 its reverse (23342655), we get a palindrome (579585975).

The spelling of 556243320 in words is "five hundred fifty-six million, two hundred forty-three thousand, three hundred twenty".