Base | Representation |
---|---|
bin | 1110100001000… |
… | …10101011101000 |
3 | 22111010220110112 |
4 | 13100202223220 |
5 | 222133324442 |
6 | 20030033452 |
7 | 3006041420 |
oct | 720425350 |
9 | 274126415 |
10 | 121776872 |
11 | 62815848 |
12 | 34948888 |
13 | 1c2c9929 |
14 | 1225d480 |
15 | aa57082 |
hex | 7422ae8 |
121776872 has 16 divisors (see below), whose sum is σ = 260950560. Its totient is φ = 52190064.
The previous prime is 121776821. The next prime is 121776877. The reversal of 121776872 is 278677121.
It is not an unprimeable number, because it can be changed into a prime (121776877) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087238 + ... + 1087349.
It is an arithmetic number, because the mean of its divisors is an integer number (16309410).
Almost surely, 2121776872 is an apocalyptic number.
It is an amenable number.
121776872 is an abundant number, since it is smaller than the sum of its proper divisors (139173688).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121776872 is a wasteful number, since it uses less digits than its factorization.
121776872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2174600 (or 2174596 counting only the distinct ones).
The product of its digits is 65856, while the sum is 41.
The square root of 121776872 is about 11035.2558647274. The cubic root of 121776872 is about 495.6650205234.
The spelling of 121776872 in words is "one hundred twenty-one million, seven hundred seventy-six thousand, eight hundred seventy-two".
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