Base | Representation |
---|---|
bin | 11001001101000010… |
… | …11100001110010110 |
3 | 1021221000100022020110 |
4 | 30212201130032112 |
5 | 210202441434304 |
6 | 10114404343450 |
7 | 656213215560 |
oct | 144641341626 |
9 | 37830308213 |
10 | 13531202454 |
11 | 5814013750 |
12 | 27576a4b86 |
13 | 1378460193 |
14 | 925124330 |
15 | 542dd0289 |
hex | 32685c396 |
13531202454 has 64 divisors (see below), whose sum is σ = 33786408960. Its totient is φ = 3509778720.
The previous prime is 13531202453. The next prime is 13531202459. The reversal of 13531202454 is 45420213531.
It is a super-2 number, since 2×135312024542 (a number of 21 digits) contains 22 as substring.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13531202453) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323557 + ... + 362975.
It is an arithmetic number, because the mean of its divisors is an integer number (527912640).
Almost surely, 213531202454 is an apocalyptic number.
13531202454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 13531202454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16893204480).
13531202454 is an abundant number, since it is smaller than the sum of its proper divisors (20255206506).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13531202454 is a wasteful number, since it uses less digits than its factorization.
13531202454 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40185.
The product of its (nonzero) digits is 14400, while the sum is 30.
Adding to 13531202454 its reverse (45420213531), we get a palindrome (58951415985).
The spelling of 13531202454 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred fifty-four".
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