Base | Representation |
---|---|
bin | 10001101011100100010… |
… | …000001101101010111100 |
3 | 11022011011011002221201202 |
4 | 101223210100031222330 |
5 | 124401320104424040 |
6 | 2330100141555032 |
7 | 153532041402233 |
oct | 21534420155274 |
9 | 4264134087652 |
10 | 1215010233020 |
11 | 429312668351 |
12 | 177588575a78 |
13 | 8a7622a76ac |
14 | 42b41c53b1a |
15 | 21912872015 |
hex | 11ae440dabc |
1215010233020 has 48 divisors (see below), whose sum is σ = 2595506064480. Its totient is φ = 477630768384.
The previous prime is 1215010232951. The next prime is 1215010233029. The reversal of 1215010233020 is 203320105121.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 1215010232983 and 1215010233001.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1215010233029) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4052522 + ... + 4341998.
It is an arithmetic number, because the mean of its divisors is an integer number (54073043010).
Almost surely, 21215010233020 is an apocalyptic number.
1215010233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1215010233020 is an abundant number, since it is smaller than the sum of its proper divisors (1380495831460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1215010233020 is a wasteful number, since it uses less digits than its factorization.
1215010233020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 293102 (or 293100 counting only the distinct ones).
The product of its (nonzero) digits is 360, while the sum is 20.
Adding to 1215010233020 its reverse (203320105121), we get a palindrome (1418330338141).
The spelling of 1215010233020 in words is "one trillion, two hundred fifteen billion, ten million, two hundred thirty-three thousand, twenty".
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