Base | Representation |
---|---|
bin | 1111111000100… |
… | …10101011001000 |
3 | 100021201120122201 |
4 | 13330102223020 |
5 | 233102330030 |
6 | 21115525544 |
7 | 3205366153 |
oct | 774225310 |
9 | 307646581 |
10 | 133245640 |
11 | 69239470 |
12 | 387598b4 |
13 | 217b3b98 |
14 | 139a6c9a |
15 | ba702ca |
hex | 7f12ac8 |
133245640 has 32 divisors (see below), whose sum is σ = 327058560. Its totient is φ = 48452800.
The previous prime is 133245617. The next prime is 133245649. The reversal of 133245640 is 46542331.
133245640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a junction number, because it is equal to n+sod(n) for n = 133245599 and 133245608.
It is not an unprimeable number, because it can be changed into a prime (133245649) 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, 150976 + ... + 151855.
It is an arithmetic number, because the mean of its divisors is an integer number (10220580).
Almost surely, 2133245640 is an apocalyptic number.
133245640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
133245640 is an abundant number, since it is smaller than the sum of its proper divisors (193812920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
133245640 is a wasteful number, since it uses less digits than its factorization.
133245640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 302853 (or 302849 counting only the distinct ones).
The product of its (nonzero) digits is 8640, while the sum is 28.
The square root of 133245640 is about 11543.2075265067. The cubic root of 133245640 is about 510.7609299850.
Adding to 133245640 its reverse (46542331), we get a palindrome (179787971).
The spelling of 133245640 in words is "one hundred thirty-three million, two hundred forty-five thousand, six hundred forty".
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