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258244 = 22723401
BaseRepresentation
bin111111000011000100
3111010020121
4333003010
531230434
65311324
72123620
oct770304
9433217
10258244
11167028
12105544
139070c
146a180
15517b4
hex3f0c4

258244 has 24 divisors (see below), whose sum is σ = 540288. Its totient is φ = 105600.

The previous prime is 258241. The next prime is 258253. The reversal of 258244 is 442852.

258244 = 922 + 932 + ... + 1152.

It is a happy number.

258244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (22512).

2258244 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 258244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270144).

258244 is an abundant number, since it is smaller than the sum of its proper divisors (282044).

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

258244 is a wasteful number, since it uses less digits than its factorization.

258244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 433 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 258244 is about 508.1771344718. The cubic root of 258244 is about 63.6810301130.

The spelling of 258244 in words is "two hundred fifty-eight thousand, two hundred forty-four".

Divisors: 1 2 4 7 14 23 28 46 92 161 322 401 644 802 1604 2807 5614 9223 11228 18446 36892 64561 129122 258244