378404 has 24 divisors (see below), whose sum is σ = 752640. Its totient is φ = 165024.

The previous prime is 378401. The next prime is 378407. The reversal of 378404 is 404873.

378404 = 17³ + 18³ + ... + 35³.

It is an interprime number because it is at equal distance from previous prime (378401) and next prime (378407).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (378401) 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, 797 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (31360).

2³⁷⁸⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

378404 is a deficient number, since it is larger than the sum of its proper divisors (374236).

378404 is a wasteful number, since it uses less digits than its factorization.

378404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 378404 is about 615.1455112410. The cubic root of 378404 is about 72.3300179462.

The spelling of 378404 in words is "three hundred seventy-eight thousand, four hundred four".