Base | Representation |
---|---|
bin | 101000000010111001000 |
3 | 2110200000000 |
4 | 11000113020 |
5 | 313442300 |
6 | 44043000 |
7 | 14103441 |
oct | 5002710 |
9 | 2420000 |
10 | 1312200 |
11 | 81696a |
12 | 533460 |
13 | 36c366 |
14 | 2622c8 |
15 | 1adc00 |
hex | 1405c8 |
1312200 has 108 divisors (see below), whose sum is σ = 4576065. Its totient is φ = 349920.
The previous prime is 1312189. The next prime is 1312211. The reversal of 1312200 is 22131.
It is a happy number.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is an interprime number because it is at equal distance from previous prime (1312189) and next prime (1312211).
It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 26244 = 1134^2 + 162^2 .
It is a tau number, because it is divible by the number of its divisors (108).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=810.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 262438 + ... + 262442.
21312200 is an apocalyptic number.
1312200 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 1312200
1312200 is an abundant number, since it is smaller than the sum of its proper divisors (3263865).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312200 is an frugal number, since it uses more digits than its factorization.
1312200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 40 (or 10 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 9.
The square root of 1312200 is about 1145.5129855222. The cubic root of 1312200 is about 109.4796359203.
Adding to 1312200 its reverse (22131), we get a palindrome (1334331).
The spelling of 1312200 in words is "one million, three hundred twelve thousand, two hundred".
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