Base | Representation |
---|---|
bin | 1110011011110… |
… | …00100111100000 |
3 | 22102211111221010 |
4 | 13031320213200 |
5 | 221444032123 |
6 | 20003100520 |
7 | 3000110520 |
oct | 715704740 |
9 | 272744833 |
10 | 121080288 |
11 | 6238a45a |
12 | 34671740 |
13 | 1c114854 |
14 | 1211b680 |
15 | a96a993 |
hex | 73789e0 |
121080288 has 48 divisors (see below), whose sum is σ = 363242880. Its totient is φ = 34594176.
The previous prime is 121080277. The next prime is 121080313. The reversal of 121080288 is 882080121.
It is a tau number, because it is divible by the number of its divisors (48).
It is a super-2 number, since 2×1210802882 = 29320872284325888, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89418 + ... + 90761.
It is an arithmetic number, because the mean of its divisors is an integer number (7567560).
Almost surely, 2121080288 is an apocalyptic number.
It is an amenable number.
121080288 is an abundant number, since it is smaller than the sum of its proper divisors (242162592).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121080288 is a wasteful number, since it uses less digits than its factorization.
121080288 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 180199 (or 180191 counting only the distinct ones).
The product of its (nonzero) digits is 2048, while the sum is 30.
The square root of 121080288 is about 11003.6488493590. The cubic root of 121080288 is about 494.7181172362.
The spelling of 121080288 in words is "one hundred twenty-one million, eighty thousand, two hundred eighty-eight".
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