378424 has 8 divisors (see below), whose sum is σ = 709560. Its totient is φ = 189208.

The previous prime is 378407. The next prime is 378439. The reversal of 378424 is 424873.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 378392 and 378401.

It is a congruent number.

It is an unprimeable number.

378424 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 as a sum of consecutive naturals, namely, 23644 + ... + 23659.

It is an arithmetic number, because the mean of its divisors is an integer number (88695).

2³⁷⁸⁴²⁴ is an apocalyptic number.

It is an amenable number.

378424 is a deficient number, since it is larger than the sum of its proper divisors (331136).

378424 is a wasteful number, since it uses less digits than its factorization.

378424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47309 (or 47305 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 378424 is about 615.1617673425. The cubic root of 378424 is about 72.3312922235.

The spelling of 378424 in words is "three hundred seventy-eight thousand, four hundred twenty-four".