556236378 has 48 divisors (see below), whose sum is σ = 1237856256. Its totient is φ = 180442080.

The previous prime is 556236377. The next prime is 556236403. The reversal of 556236378 is 873632655.

556236378 is a `hidden beast` number, since 5 + 5 + 6 + 2 + 3 + 637 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (556236371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118863 + ... + 123453.

It is an arithmetic number, because the mean of its divisors is an integer number (25788672).

Almost surely, 2^556236378 is an apocalyptic number.

556236378 is an abundant number, since it is smaller than the sum of its proper divisors (681619878).

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

556236378 is a wasteful number, since it uses less digits than its factorization.

556236378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779 (or 4776 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 556236378 is about 23584.6640425510. The cubic root of 556236378 is about 822.4063648670.

It can be divided in two parts, 55623 and 6378, that added together give a square (62001 = 249²).

The spelling of 556236378 in words is "five hundred fifty-six million, two hundred thirty-six thousand, three hundred seventy-eight".