Base | Representation |
---|---|
bin | 10110101100001110… |
… | …11100111011000010 |
3 | 1011102222222111121210 |
4 | 23112013130323002 |
5 | 144422121243130 |
6 | 5332455030550 |
7 | 610613044623 |
oct | 132607347302 |
9 | 34388874553 |
10 | 12182212290 |
11 | 51915a5446 |
12 | 243b96b456 |
13 | 11c1b31651 |
14 | 837ccda4a |
15 | 4b47645b0 |
hex | 2d61dcec2 |
12182212290 has 32 divisors (see below), whose sum is σ = 30180450816. Its totient is φ = 3143796480.
The previous prime is 12182212261. The next prime is 12182212307. The reversal of 12182212290 is 9221228121.
It is a Harshad number since it is a multiple of its sum of digits (30).
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, 6548647 + ... + 6550506.
It is an arithmetic number, because the mean of its divisors is an integer number (943139088).
Almost surely, 212182212290 is an apocalyptic number.
12182212290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12182212290 is an abundant number, since it is smaller than the sum of its proper divisors (17998238526).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12182212290 is a wasteful number, since it uses less digits than its factorization.
12182212290 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13099194.
The product of its (nonzero) digits is 2304, while the sum is 30.
The spelling of 12182212290 in words is "twelve billion, one hundred eighty-two million, two hundred twelve thousand, two hundred ninety".
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