378556 has 24 divisors (see below), whose sum is σ = 740880. Its totient is φ = 168192.

The previous prime is 378551. The next prime is 378559. The reversal of 378556 is 655873.

It is a happy number.

378556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378551) by changing a digit.

378556 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1146 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (30870).

2³⁷⁸⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

378556 is a deficient number, since it is larger than the sum of its proper divisors (362324).

378556 is a wasteful number, since it uses less digits than its factorization.

378556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 331 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 378556 is about 615.2690468405. The cubic root of 378556 is about 72.3397013278.

The spelling of 378556 in words is "three hundred seventy-eight thousand, five hundred fifty-six".