258655072 has 72 divisors (see below), whose sum is σ = 567535248. Its totient is φ = 115349760.

The previous prime is 258655069. The next prime is 258655081. The reversal of 258655072 is 270556852.

258655072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399453 + ... + 400099.

It is an arithmetic number, because the mean of its divisors is an integer number (7882434).

Almost surely, 2^258655072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258655072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283767624).

258655072 is an abundant number, since it is smaller than the sum of its proper divisors (308880176).

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

258655072 is a wasteful number, since it uses less digits than its factorization.

258655072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 258655072 is about 16082.7569775832. The cubic root of 258655072 is about 637.1480128931.

The spelling of 258655072 in words is "two hundred fifty-eight million, six hundred fifty-five thousand, seventy-two".