258712938 has 48 divisors (see below), whose sum is σ = 614794752. Its totient is φ = 77976000.

The previous prime is 258712931. The next prime is 258712963. The reversal of 258712938 is 839217852.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 258712893 and 258712902.

It is not an unprimeable number, because it can be changed into a prime (258712931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34398 + ... + 41238.

It is an arithmetic number, because the mean of its divisors is an integer number (12808224).

Almost surely, 2^258712938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258712938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307397376).

258712938 is an abundant number, since it is smaller than the sum of its proper divisors (356081814).

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

258712938 is a wasteful number, since it uses less digits than its factorization.

258712938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7051 (or 7048 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 258712938 is about 16084.5558844502. Note that the first 3 decimals coincide. The cubic root of 258712938 is about 637.1955233447.

The spelling of 258712938 in words is "two hundred fifty-eight million, seven hundred twelve thousand, nine hundred thirty-eight".