| Base | Representation |
|---|---|
| bin | 110010010100… |
| … | …100101110100 |
| 3 | 220211012101120 |
| 4 | 302110211310 |
| 5 | 11334112130 |
| 6 | 1150423540 |
| 7 | 220061205 |
| oct | 62244564 |
| 9 | 26735346 |
| 10 | 13191540 |
| 11 | 749aaaa |
| 12 | 4501bb0 |
| 13 | 296b45b |
| 14 | 1a755ac |
| 15 | 1258910 |
| hex | c94974 |
13191540 has 48 divisors (see below), whose sum is σ = 37802688. Its totient is φ = 3435264.
The previous prime is 13191533. The next prime is 13191547. The reversal of 13191540 is 4519131.
It is an interprime number because it is at equal distance from previous prime (13191533) and next prime (13191547).
It is a self number, because there is not a number n which added to its sum of digits gives 13191540.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13191547) 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, 24 + ... + 5136.
It is an arithmetic number, because the mean of its divisors is an integer number (787556).
Almost surely, 213191540 is an apocalyptic number.
13191540 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 13191540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18901344).
13191540 is an abundant number, since it is smaller than the sum of its proper divisors (24611148).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13191540 is a wasteful number, since it uses less digits than its factorization.
13191540 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5168 (or 5166 counting only the distinct ones).
The product of its (nonzero) digits is 540, while the sum is 24.
The square root of 13191540 is about 3632.0159691279. The cubic root of 13191540 is about 236.2826499485.
It can be divided in two parts, 13191 and 540, that added together give a palindrome (13731).
The spelling of 13191540 in words is "thirteen million, one hundred ninety-one thousand, five hundred forty".
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