Base | Representation |
---|---|
bin | 1000100110011… |
… | …10110010011000 |
3 | 12000202121102110 |
4 | 10103032302120 |
5 | 121432301133 |
6 | 11054232320 |
7 | 1534160226 |
oct | 423166230 |
9 | 160677373 |
10 | 72150168 |
11 | 377aa542 |
12 | 201b56a0 |
13 | 11c4240c |
14 | 9821b16 |
15 | 6502c63 |
hex | 44cec98 |
72150168 has 32 divisors (see below), whose sum is σ = 180586800. Its totient is φ = 24021888.
The previous prime is 72150167. The next prime is 72150181. The reversal of 72150168 is 86105127.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72150167) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33838 + ... + 35906.
Almost surely, 272150168 is an apocalyptic number.
It is an amenable number.
72150168 is an abundant number, since it is smaller than the sum of its proper divisors (108436632).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72150168 is a wasteful number, since it uses less digits than its factorization.
72150168 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3531 (or 3527 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 30.
The square root of 72150168 is about 8494.1254994261. The cubic root of 72150168 is about 416.3057878676.
The spelling of 72150168 in words is "seventy-two million, one hundred fifty thousand, one hundred sixty-eight".
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