258317238 has 16 divisors (see below), whose sum is σ = 520704000. Its totient is φ = 85427496.

The previous prime is 258317237. The next prime is 258317243. The reversal of 258317238 is 832713852.

It is a junction number, because it is equal to n+sod(n) for n = 258317196 and 258317205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258317233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168738 + ... + 170261.

It is an arithmetic number, because the mean of its divisors is an integer number (32544000).

Almost surely, 2^258317238 is an apocalyptic number.

258317238 is an abundant number, since it is smaller than the sum of its proper divisors (262386762).

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

258317238 is a wasteful number, since it uses less digits than its factorization.

258317238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339131.

The product of its digits is 80640, while the sum is 39.

The square root of 258317238 is about 16072.2505580270. The cubic root of 258317238 is about 636.8704952423.

The spelling of 258317238 in words is "two hundred fifty-eight million, three hundred seventeen thousand, two hundred thirty-eight".