Base | Representation |
---|---|
bin | 10001101010010110010… |
… | …110100010101000011010 |
3 | 11022000210001211021222212 |
4 | 101222112112202220122 |
5 | 124341131014101030 |
6 | 2325322333115122 |
7 | 153454461365210 |
oct | 21522626425032 |
9 | 4260701737885 |
10 | 1213703268890 |
11 | 428801943902 |
12 | 177282928aa2 |
13 | 8a5b45a1938 |
14 | 42a5a43ccb0 |
15 | 21887c58595 |
hex | 11a965a2a1a |
1213703268890 has 32 divisors (see below), whose sum is σ = 2497310524800. Its totient is φ = 416035249344.
The previous prime is 1213703268871. The next prime is 1213703268913. The reversal of 1213703268890 is 988623073121.
It is a Curzon number.
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, 1587332 + ... + 2224191.
It is an arithmetic number, because the mean of its divisors is an integer number (78040953900).
Almost surely, 21213703268890 is an apocalyptic number.
1213703268890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1213703268890 is an abundant number, since it is smaller than the sum of its proper divisors (1283607255910).
1213703268890 is a wasteful number, since it uses less digits than its factorization.
1213703268890 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3816086.
The product of its (nonzero) digits is 870912, while the sum is 50.
The spelling of 1213703268890 in words is "one trillion, two hundred thirteen billion, seven hundred three million, two hundred sixty-eight thousand, eight hundred ninety".
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