378426 has 16 divisors (see below), whose sum is σ = 770400. Its totient is φ = 123888.

The previous prime is 378407. The next prime is 378439. The reversal of 378426 is 624873.

It is a d-powerful number, because it can be written as 3² + 7² + 4⁸ + 8⁵ + 2⁷ + 6⁷ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 378393 and 378402.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378426.

It is an unprimeable number.

378426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (48150).

2³⁷⁸⁴²⁶ is an apocalyptic number.

378426 is an abundant number, since it is smaller than the sum of its proper divisors (391974).

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

378426 is a wasteful number, since it uses less digits than its factorization.

378426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its digits is 8064, while the sum is 30.

The square root of 378426 is about 615.1633929291. The cubic root of 378426 is about 72.3314196487.

It can be divided in two parts, 378 and 426, that multiplied together give a triangular number (161028 = T₅₆₇).

The spelling of 378426 in words is "three hundred seventy-eight thousand, four hundred twenty-six".