Base | Representation |
---|---|
bin | 1111100000001… |
… | …11000101000100 |
3 | 100001201100101022 |
4 | 13300013011010 |
5 | 231243134140 |
6 | 20523250312 |
7 | 3136266401 |
oct | 760070504 |
9 | 301640338 |
10 | 130052420 |
11 | 67458343 |
12 | 37679998 |
13 | 20c365c4 |
14 | 133b52a8 |
15 | b63e0b5 |
hex | 7c07144 |
130052420 has 48 divisors (see below), whose sum is σ = 278713008. Its totient is φ = 50964480.
The previous prime is 130052393. The next prime is 130052423. The reversal of 130052420 is 24250031.
It can be written as a sum of positive squares in 8 ways, for example, as 6220036 + 123832384 = 2494^2 + 11128^2 .
It is not an unprimeable number, because it can be changed into a prime (130052423) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410102 + ... + 410418.
It is an arithmetic number, because the mean of its divisors is an integer number (5806521).
Almost surely, 2130052420 is an apocalyptic number.
130052420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
130052420 is an abundant number, since it is smaller than the sum of its proper divisors (148660588).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130052420 is a wasteful number, since it uses less digits than its factorization.
130052420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 680 (or 678 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 17.
The square root of 130052420 is about 11404.0527883731. The cubic root of 130052420 is about 506.6477822678.
It can be divided in two parts, 13005 and 2420, that multiplied together give a square (31472100 = 56102).
The spelling of 130052420 in words is "one hundred thirty million, fifty-two thousand, four hundred twenty".
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