Base | Representation |
---|---|
bin | 1111100110100… |
… | …11110111110010 |
3 | 100010021222001002 |
4 | 13303103313302 |
5 | 232002010000 |
6 | 20553242002 |
7 | 3146362100 |
oct | 763236762 |
9 | 303258032 |
10 | 130891250 |
11 | 67980596 |
12 | 37a03302 |
13 | 2116b359 |
14 | 13552c70 |
15 | b7578d5 |
hex | 7cd3df2 |
130891250 has 60 divisors (see below), whose sum is σ = 285532038. Its totient is φ = 44856000.
The previous prime is 130891231. The next prime is 130891259. The reversal of 130891250 is 52198031.
It can be written as a sum of positive squares in 5 ways, for example, as 4036081 + 126855169 = 2009^2 + 11263^2 .
It is not an unprimeable number, because it can be changed into a prime (130891259) by changing a digit.
It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 60182 + ... + 62318.
Almost surely, 2130891250 is an apocalyptic number.
130891250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
130891250 is an abundant number, since it is smaller than the sum of its proper divisors (154640788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130891250 is an equidigital number, since it uses as much as digits as its factorization.
130891250 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2173 (or 2151 counting only the distinct ones).
The product of its (nonzero) digits is 2160, while the sum is 29.
The square root of 130891250 is about 11440.7713900768. The cubic root of 130891250 is about 507.7347308914.
The spelling of 130891250 in words is "one hundred thirty million, eight hundred ninety-one thousand, two hundred fifty".
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