258278 has 8 divisors (see below), whose sum is σ = 392040. Its totient is φ = 127600.

The previous prime is 258277. The next prime is 258283. The reversal of 258278 is 872852.

258278 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258277) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 548 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (49005).

2²⁵⁸²⁷⁸ is an apocalyptic number.

258278 is a deficient number, since it is larger than the sum of its proper divisors (133762).

258278 is a wasteful number, since it uses less digits than its factorization.

258278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542.

The product of its digits is 8960, while the sum is 32.

The square root of 258278 is about 508.2105862731. The cubic root of 258278 is about 63.6838247053.

The spelling of 258278 in words is "two hundred fifty-eight thousand, two hundred seventy-eight".