Base | Representation |
---|---|
bin | 10001100101000111001… |
… | …110110101011001011000 |
3 | 11021111021020022102002020 |
4 | 101211013032311121120 |
5 | 124243122201144430 |
6 | 2322552405534440 |
7 | 153165241026402 |
oct | 21450716653130 |
9 | 4244236272066 |
10 | 1208080881240 |
11 | 426387187842 |
12 | 176173a14420 |
13 | 89bc980933c |
14 | 42685847b72 |
15 | 21659360b10 |
hex | 119473b5658 |
1208080881240 has 64 divisors (see below), whose sum is σ = 3638681948160. Its totient is φ = 320871408000.
The previous prime is 1208080881229. The next prime is 1208080881269. The reversal of 1208080881240 is 421880808021.
It is a super-2 number, since 2×12080808812402 (a number of 25 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1208080881192 and 1208080881201.
It is a congruent 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, 20024344 + ... + 20084583.
It is an arithmetic number, because the mean of its divisors is an integer number (56854405440).
Almost surely, 21208080881240 is an apocalyptic number.
1208080881240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1208080881240 is an abundant number, since it is smaller than the sum of its proper divisors (2430601066920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1208080881240 is a wasteful number, since it uses less digits than its factorization.
1208080881240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40109192 (or 40109188 counting only the distinct ones).
The product of its (nonzero) digits is 65536, while the sum is 42.
The spelling of 1208080881240 in words is "one trillion, two hundred eight billion, eighty million, eight hundred eighty-one thousand, two hundred forty".
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