Base | Representation |
---|---|
bin | 110010110110… |
… | …110001000000 |
3 | 221002022102000 |
4 | 302312301000 |
5 | 11403102040 |
6 | 1153424000 |
7 | 221213256 |
oct | 62666100 |
9 | 27068360 |
10 | 13331520 |
11 | 7586194 |
12 | 456b000 |
13 | 29ba097 |
14 | 1ab05d6 |
15 | 1285130 |
hex | cb6c40 |
13331520 has 112 divisors (see below), whose sum is σ = 47061120. Its totient is φ = 3552768.
The previous prime is 13331509. The next prime is 13331531. The reversal of 13331520 is 2513331.
It is an interprime number because it is at equal distance from previous prime (13331509) and next prime (13331531).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 13331493 and 13331502.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7869 + ... + 9411.
Almost surely, 213331520 is an apocalyptic number.
13331520 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 13331520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23530560).
13331520 is an abundant number, since it is smaller than the sum of its proper divisors (33729600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13331520 is a wasteful number, since it uses less digits than its factorization.
13331520 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1569 (or 1553 counting only the distinct ones).
The product of its (nonzero) digits is 270, while the sum is 18.
The square root of 13331520 is about 3651.2354073656. The cubic root of 13331520 is about 237.1154700900.
Adding to 13331520 its reverse (2513331), we get a palindrome (15844851).
The spelling of 13331520 in words is "thirteen million, three hundred thirty-one thousand, five hundred twenty".
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