378634 has 12 divisors (see below), whose sum is σ = 589842. Its totient is φ = 182280.

The previous prime is 378629. The next prime is 378661. The reversal of 378634 is 436873.

It can be written as a sum of positive squares in only one way, i.e., 216225 + 162409 = 465^2 + 403^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 378596 and 378605.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1824 + ... + 2020.

2³⁷⁸⁶³⁴ is an apocalyptic number.

378634 is a deficient number, since it is larger than the sum of its proper divisors (211208).

378634 is a wasteful number, since it uses less digits than its factorization.

378634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 230 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 378634 is about 615.3324304797. The cubic root of 378634 is about 72.3446694251.

The spelling of 378634 in words is "three hundred seventy-eight thousand, six hundred thirty-four".