378740 has 24 divisors (see below), whose sum is σ = 824040. Its totient is φ = 146048.

The previous prime is 378739. The next prime is 378757. The reversal of 378740 is 47873.

378740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13924 + 364816 = 118^2 + 604^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (34335).

2³⁷⁸⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412020).

378740 is an abundant number, since it is smaller than the sum of its proper divisors (445300).

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

378740 is a wasteful number, since it uses less digits than its factorization.

378740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 378740 is about 615.4185567563. The cubic root of 378740 is about 72.3514198485.

The spelling of 378740 in words is "three hundred seventy-eight thousand, seven hundred forty".