Base | Representation |
---|---|
bin | 1111011111111… |
… | …01001111111011 |
3 | 100001122022011000 |
4 | 13233331033323 |
5 | 231240342110 |
6 | 20522340043 |
7 | 3136041120 |
oct | 757751773 |
9 | 301568130 |
10 | 130012155 |
11 | 67430069 |
12 | 3765a623 |
13 | 20c21190 |
14 | 133a4747 |
15 | b6321c0 |
hex | 7bfd3fb |
130012155 has 128 divisors (see below), whose sum is σ = 299980800. Its totient is φ = 51881472.
The previous prime is 130012153. The next prime is 130012187. The reversal of 130012155 is 551210031.
It is not a de Polignac number, because 130012155 - 21 = 130012153 is a prime.
It is not an unprimeable number, because it can be changed into a prime (130012151) by changing a digit.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 233137 + ... + 233693.
It is an arithmetic number, because the mean of its divisors is an integer number (2343600).
Almost surely, 2130012155 is an apocalyptic number.
130012155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
130012155 is an abundant number, since it is smaller than the sum of its proper divisors (169968645).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130012155 is a wasteful number, since it uses less digits than its factorization.
130012155 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 610 (or 604 counting only the distinct ones).
The product of its (nonzero) digits is 150, while the sum is 18.
The square root of 130012155 is about 11402.2872705436. The cubic root of 130012155 is about 506.5954898188.
Adding to 130012155 its reverse (551210031), we get a palindrome (681222186).
The spelling of 130012155 in words is "one hundred thirty million, twelve thousand, one hundred fifty-five".
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