Base | Representation |
---|---|
bin | 1000100110111… |
… | …00111011101100 |
3 | 12000212112220101 |
4 | 10103130323230 |
5 | 121441124413 |
6 | 11055400444 |
7 | 1534521160 |
oct | 423347354 |
9 | 160775811 |
10 | 72208108 |
11 | 3783a025 |
12 | 20223124 |
13 | 11c628bb |
14 | 9838ca0 |
15 | 6514edd |
hex | 44dceec |
72208108 has 12 divisors (see below), whose sum is σ = 144416272. Its totient is φ = 30946320.
The previous prime is 72208067. The next prime is 72208141. The reversal of 72208108 is 80180227.
72208108 is an admirable number.
It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 2578861 = 72208108 / (7 + 2 + 2 + 0 + 8 + 1 + 0 + 8).
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289403 + ... + 1289458.
Almost surely, 272208108 is an apocalyptic number.
It is an amenable number.
72208108 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72208108 is a wasteful number, since it uses less digits than its factorization.
72208108 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2578872 (or 2578870 counting only the distinct ones).
The product of its (nonzero) digits is 1792, while the sum is 28.
The square root of 72208108 is about 8497.5354073990. The cubic root of 72208108 is about 416.4171958019.
The spelling of 72208108 in words is "seventy-two million, two hundred eight thousand, one hundred eight".
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