378978 has 16 divisors (see below), whose sum is σ = 768096. Its totient is φ = 124640.

The previous prime is 378977. The next prime is 378997. The reversal of 378978 is 879873.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378978.

It is not an unprimeable number, because it can be changed into a prime (378977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 878.

It is an arithmetic number, because the mean of its divisors is an integer number (48006).

2³⁷⁸⁹⁷⁸ is an apocalyptic number.

378978 is an abundant number, since it is smaller than the sum of its proper divisors (389118).

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

378978 is a wasteful number, since it uses less digits than its factorization.

378978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its digits is 84672, while the sum is 42.

The square root of 378978 is about 615.6118907234. The cubic root of 378978 is about 72.3665718721.

The spelling of 378978 in words is "three hundred seventy-eight thousand, nine hundred seventy-eight".