258748256 has 48 divisors (see below), whose sum is σ = 553818384. Its totient is φ = 118285824.

The previous prime is 258748249. The next prime is 258748261. The reversal of 258748256 is 652847852.

It is a self number, because there is not a number n which added to its sum of digits gives 258748256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41606 + ... + 47418.

It is an arithmetic number, because the mean of its divisors is an integer number (11537883).

Almost surely, 2^258748256 is an apocalyptic number.

258748256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258748256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276909192).

258748256 is an abundant number, since it is smaller than the sum of its proper divisors (295070128).

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

258748256 is a wasteful number, since it uses less digits than its factorization.

258748256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943 (or 5935 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 258748256 is about 16085.6537324412. The cubic root of 258748256 is about 637.2245174462.

The spelling of 258748256 in words is "two hundred fifty-eight million, seven hundred forty-eight thousand, two hundred fifty-six".