Search a number
-
+
13123000 = 2353111193
BaseRepresentation
bin110010000011…
…110110111000
3220200201101001
4302003312320
511324414000
61145134344
7216354322
oct62036670
926621331
1013123000
117453560
12448a3b4
1329461b7
141a58612
15124346a
hexc83db8

13123000 has 64 divisors (see below), whose sum is σ = 33527520. Its totient is φ = 4768000.

The previous prime is 13122983. The next prime is 13123003. The reversal of 13123000 is 32131.

13123000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10404 + ... + 11596.

Almost surely, 213123000 is an apocalyptic number.

13123000 is a gapful number since it is divisible by the number (10) 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 13123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16763760).

13123000 is an abundant number, since it is smaller than the sum of its proper divisors (20404520).

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

13123000 is a wasteful number, since it uses less digits than its factorization.

13123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13123000 is about 3622.5681498075. The cubic root of 13123000 is about 235.8727169622.

Adding to 13123000 its reverse (32131), we get a palindrome (13155131).

The spelling of 13123000 in words is "thirteen million, one hundred twenty-three thousand".

Divisors: 1 2 4 5 8 10 11 20 22 25 40 44 50 55 88 100 110 125 200 220 250 275 440 500 550 1000 1100 1193 1375 2200 2386 2750 4772 5500 5965 9544 11000 11930 13123 23860 26246 29825 47720 52492 59650 65615 104984 119300 131230 149125 238600 262460 298250 328075 524920 596500 656150 1193000 1312300 1640375 2624600 3280750 6561500 13123000