Base | Representation |
---|---|
bin | 110010001010… |
… | …110111000000 |
3 | 220202011201021 |
4 | 302022313000 |
5 | 11331323210 |
6 | 1145515224 |
7 | 216534043 |
oct | 62126700 |
9 | 26664637 |
10 | 13151680 |
11 | 7473063 |
12 | 44a2b14 |
13 | 2956279 |
14 | 1a64c5a |
15 | 124bbda |
hex | c8adc0 |
13151680 has 56 divisors (see below), whose sum is σ = 31802832. Its totient is φ = 5179392.
The previous prime is 13151669. The next prime is 13151689. The reversal of 13151680 is 8615131.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13151689) 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, 23079 + ... + 23641.
Almost surely, 213151680 is an apocalyptic number.
13151680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13151680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15901416).
13151680 is an abundant number, since it is smaller than the sum of its proper divisors (18651152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13151680 is an equidigital number, since it uses as much as digits as its factorization.
13151680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 653 (or 643 counting only the distinct ones).
The product of its (nonzero) digits is 720, while the sum is 25.
The square root of 13151680 is about 3626.5245070177. The cubic root of 13151680 is about 236.0444233142.
It can be divided in two parts, 13151 and 680, that added together give a palindrome (13831).
The spelling of 13151680 in words is "thirteen million, one hundred fifty-one thousand, six hundred eighty".
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