378458 has 4 divisors (see below), whose sum is σ = 567690. Its totient is φ = 189228.

The previous prime is 378449. The next prime is 378463. The reversal of 378458 is 854873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854873 = 167 ⋅5119.

It can be written as a sum of positive squares in only one way, i.e., 190969 + 187489 = 437^2 + 433^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94613 + ... + 94616.

2³⁷⁸⁴⁵⁸ is an apocalyptic number.

378458 is a deficient number, since it is larger than the sum of its proper divisors (189232).

378458 is a wasteful number, since it uses less digits than its factorization.

378458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189231.

The product of its digits is 26880, while the sum is 35.

The square root of 378458 is about 615.1894017293. The cubic root of 378458 is about 72.3334583918. Note that the first 3 decimals are identical.

The spelling of 378458 in words is "three hundred seventy-eight thousand, four hundred fifty-eight".