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258340 = 22512917
BaseRepresentation
bin111111000100100100
3111010101011
4333010210
531231330
65312004
72124115
oct770444
9433334
10258340
11167105
12105604
1390784
146a20c
155182a
hex3f124

258340 has 12 divisors (see below), whose sum is σ = 542556. Its totient is φ = 103328.

The previous prime is 258337. The next prime is 258353. The reversal of 258340 is 43852.

258340 is nontrivially palindromic in base 9.

258340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 116964 + 141376 = 342^2 + 376^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6439 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (45213).

2258340 is an apocalyptic number.

258340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258340 is an abundant number, since it is smaller than the sum of its proper divisors (284216).

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

258340 is a wasteful number, since it uses less digits than its factorization.

258340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12926 (or 12924 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 258340 is about 508.2715809486. The cubic root of 258340 is about 63.6889200950.

The spelling of 258340 in words is "two hundred fifty-eight thousand, three hundred forty".