Base | Representation |
---|---|
bin | 1110100000000… |
… | …00011111100100 |
3 | 22110212210101000 |
4 | 13100000133210 |
5 | 222114334321 |
6 | 20023033300 |
7 | 3004616226 |
oct | 720003744 |
9 | 273783330 |
10 | 121636836 |
11 | 6272a612 |
12 | 3489b830 |
13 | 1c27ac79 |
14 | 12224416 |
15 | aa2a826 |
hex | 74007e4 |
121636836 has 96 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 37711872.
The previous prime is 121636831. The next prime is 121636843. The reversal of 121636836 is 638636121.
121636836 is a `hidden beast` number, since 12 + 1 + 636 + 8 + 3 + 6 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 121636836.
It is not an unprimeable number, because it can be changed into a prime (121636831) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177751 + ... + 178433.
It is an arithmetic number, because the mean of its divisors is an integer number (3519180).
Almost surely, 2121636836 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 121636836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168920640).
121636836 is an abundant number, since it is smaller than the sum of its proper divisors (216204444).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121636836 is a wasteful number, since it uses less digits than its factorization.
121636836 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 810 (or 802 counting only the distinct ones).
The product of its digits is 31104, while the sum is 36.
The square root of 121636836 is about 11028.9091028986. The cubic root of 121636836 is about 495.4749527686.
The spelling of 121636836 in words is "one hundred twenty-one million, six hundred thirty-six thousand, eight hundred thirty-six".
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