Search a number
-
+
258248 = 23191699
BaseRepresentation
bin111111000011001000
3111010020202
4333003020
531230443
65311332
72123624
oct770310
9433222
10258248
11167031
12105548
1390713
146a184
15517b8
hex3f0c8

258248 has 16 divisors (see below), whose sum is σ = 510000. Its totient is φ = 122256.

The previous prime is 258241. The next prime is 258253. The reversal of 258248 is 842852.

258248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 258248.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258248.

It is not an unprimeable number, because it can be changed into a prime (258241) by changing a digit.

258248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698 + ... + 1001.

It is an arithmetic number, because the mean of its divisors is an integer number (31875).

2258248 is an apocalyptic number.

It is an amenable number.

258248 is a deficient number, since it is larger than the sum of its proper divisors (251752).

258248 is a wasteful number, since it uses less digits than its factorization.

258248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724 (or 1720 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 258248 is about 508.1810700921. The cubic root of 258248 is about 63.6813589013.

The spelling of 258248 in words is "two hundred fifty-eight thousand, two hundred forty-eight".

Divisors: 1 2 4 8 19 38 76 152 1699 3398 6796 13592 32281 64562 129124 258248