Search a number
-
+
258919388 = 22713711317
BaseRepresentation
bin11110110111011…
…00101111011100
3200001012110121222
433123230233130
51012240410023
641405312512
76262531010
oct1733545734
9601173558
10258919388
11123175a72
1272865738
1341846450
142655c540
1517ae6cc8
hexf6ecbdc

258919388 has 24 divisors (see below), whose sum is σ = 557673312. Its totient is φ = 102429504.

The previous prime is 258919373. The next prime is 258919391. The reversal of 258919388 is 883919852.

258919388 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355295 + ... + 356022.

It is an arithmetic number, because the mean of its divisors is an integer number (23236388).

Almost surely, 2258919388 is an apocalyptic number.

258919388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

258919388 is an abundant number, since it is smaller than the sum of its proper divisors (298753924).

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

258919388 is a wasteful number, since it uses less digits than its factorization.

258919388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711341 (or 711339 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 258919388 is about 16090.9722515453. The cubic root of 258919388 is about 637.3649698888.

The spelling of 258919388 in words is "two hundred fifty-eight million, nine hundred nineteen thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 711317 1422634 2845268 4979219 9247121 9958438 18494242 19916876 36988484 64729847 129459694 258919388