Base | Representation |
---|---|
bin | 1111001010100… |
… | …01111010101110 |
3 | 22212101002202010 |
4 | 13211101322232 |
5 | 230031310410 |
6 | 20342342050 |
7 | 3103203024 |
oct | 745217256 |
9 | 285332663 |
10 | 127213230 |
11 | 65899201 |
12 | 3672a926 |
13 | 20481201 |
14 | 12c76714 |
15 | b27cc20 |
hex | 7951eae |
127213230 has 64 divisors (see below), whose sum is σ = 320122368. Its totient is φ = 32292480.
The previous prime is 127213213. The next prime is 127213259. The reversal of 127213230 is 32312721.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 127213197 and 127213206.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228112 + ... + 228668.
It is an arithmetic number, because the mean of its divisors is an integer number (5001912).
Almost surely, 2127213230 is an apocalyptic number.
127213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 127213230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160061184).
127213230 is an abundant number, since it is smaller than the sum of its proper divisors (192909138).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
127213230 is a wasteful number, since it uses less digits than its factorization.
127213230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 921.
The product of its (nonzero) digits is 504, while the sum is 21.
The square root of 127213230 is about 11278.8842533293. The cubic root of 127213230 is about 502.9337261684.
Adding to 127213230 its reverse (32312721), we get a palindrome (159525951).
It can be divided in two parts, 12721 and 3230, that added together give a palindrome (15951).
The spelling of 127213230 in words is "one hundred twenty-seven million, two hundred thirteen thousand, two hundred thirty".
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