Base | Representation |
---|---|
bin | 1000101100000… |
… | …01101110111000 |
3 | 12002010211212010 |
4 | 10112001232320 |
5 | 122124230003 |
6 | 11122045520 |
7 | 1543332153 |
oct | 426015670 |
9 | 162124763 |
10 | 72883128 |
11 | 3816019a |
12 | 204a98a0 |
13 | 1213ac16 |
14 | 9972c9a |
15 | 65ea003 |
hex | 4581bb8 |
72883128 has 16 divisors (see below), whose sum is σ = 182207880. Its totient is φ = 24294368.
The previous prime is 72883123. The next prime is 72883147. The reversal of 72883128 is 82138827.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72883123) 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, 1518375 + ... + 1518422.
Almost surely, 272883128 is an apocalyptic number.
It is an amenable number.
72883128 is an abundant number, since it is smaller than the sum of its proper divisors (109324752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72883128 is a wasteful number, since it uses less digits than its factorization.
72883128 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3036806 (or 3036802 counting only the distinct ones).
The product of its digits is 43008, while the sum is 39.
The square root of 72883128 is about 8537.1615891934. The cubic root of 72883128 is about 417.7107650131.
The spelling of 72883128 in words is "seventy-two million, eight hundred eighty-three thousand, one hundred twenty-eight".
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