Base | Representation |
---|---|
bin | 101110101001… |
… | …100011001010 |
3 | 212000021202220 |
4 | 232221203022 |
5 | 11112310220 |
6 | 1114034510 |
7 | 205641336 |
oct | 56514312 |
9 | 25007686 |
10 | 12228810 |
11 | 69a2760 |
12 | 4118a36 |
13 | 26c21a9 |
14 | 18a47c6 |
15 | 1118540 |
hex | ba98ca |
12228810 has 32 divisors (see below), whose sum is σ = 32018112. Its totient is φ = 2964480.
The previous prime is 12228809. The next prime is 12228823. The reversal of 12228810 is 1882221.
12228810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×122288102 = 299087588032200, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18199 + ... + 18858.
It is an arithmetic number, because the mean of its divisors is an integer number (1000566).
Almost surely, 212228810 is an apocalyptic number.
12228810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12228810 is an abundant number, since it is smaller than the sum of its proper divisors (19789302).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12228810 is a wasteful number, since it uses less digits than its factorization.
12228810 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 37078.
The product of its (nonzero) digits is 512, while the sum is 24.
The square root of 12228810 is about 3496.9715469246. The cubic root of 12228810 is about 230.3888193239.
It can be divided in two parts, 12 and 228810, that added together give a palindrome (228822).
The spelling of 12228810 in words is "twelve million, two hundred twenty-eight thousand, eight hundred ten".
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