378440 has 16 divisors (see below), whose sum is σ = 851580. Its totient is φ = 151360.

The previous prime is 378439. The next prime is 378449. The reversal of 378440 is 44873.

It can be written as a sum of positive squares in 2 ways, for example, as 376996 + 1444 = 614^2 + 38^2 .

It is not an unprimeable number, because it can be changed into a prime (378449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4691 + ... + 4770.

2³⁷⁸⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

378440 is an abundant number, since it is smaller than the sum of its proper divisors (473140).

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

378440 is a wasteful number, since it uses less digits than its factorization.

378440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9472 (or 9468 counting only the distinct ones).

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

The square root of 378440 is about 615.1747719145. The cubic root of 378440 is about 72.3323116130.

It can be divided in two parts, 378 and 440, that added together give a palindrome (818).

The spelling of 378440 in words is "three hundred seventy-eight thousand, four hundred forty".