378390 has 16 divisors (see below), whose sum is σ = 908208. Its totient is φ = 100896.

The previous prime is 378379. The next prime is 378401. The reversal of 378390 is 93873.

It is an interprime number because it is at equal distance from previous prime (378379) and next prime (378401).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 12613 = 378390 / (3 + 7 + 8 + 3 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

378390 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, 6277 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (56763).

2³⁷⁸³⁹⁰ is an apocalyptic number.

378390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378390 is an abundant number, since it is smaller than the sum of its proper divisors (529818).

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

378390 is a wasteful number, since it uses less digits than its factorization.

378390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12623.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 378390 is about 615.1341317144. The cubic root of 378390 is about 72.3291259253.

The spelling of 378390 in words is "three hundred seventy-eight thousand, three hundred ninety".