258385920 has 192 divisors, whose sum is σ = 891596160. Its totient is φ = 63504384.

The previous prime is 258385901. The next prime is 258385927. The reversal of 258385920 is 29583852.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (258385927) 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 15 ways as a sum of consecutive naturals, for example, 399037 + ... + 399683.

It is an arithmetic number, because the mean of its divisors is an integer number (4643730).

Almost surely, 2^258385920 is an apocalyptic number.

258385920 is a gapful number since it is divisible by the number (20) 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 258385920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445798080).

258385920 is an abundant number, since it is smaller than the sum of its proper divisors (633210240).

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

258385920 is a wasteful number, since it uses less digits than its factorization.

258385920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 258385920 is about 16074.3870800724. The cubic root of 258385920 is about 636.9269344532.

The spelling of 258385920 in words is "two hundred fifty-eight million, three hundred eighty-five thousand, nine hundred twenty".