Base | Representation |
---|---|
bin | 110100111100… |
… | …101011000111 |
3 | 222010011210100 |
4 | 310330223013 |
5 | 12023130012 |
6 | 1213255143 |
7 | 225656331 |
oct | 64745307 |
9 | 28104710 |
10 | 13880007 |
11 | 7920289 |
12 | 47944b3 |
13 | 2b4c92b |
14 | 1bb4451 |
15 | 13428dc |
hex | d3cac7 |
13880007 has 24 divisors (see below), whose sum is σ = 21503664. Its totient is φ = 8596224.
The previous prime is 13879997. The next prime is 13880023. The reversal of 13880007 is 70008831.
It is not a de Polignac number, because 13880007 - 28 = 13879751 is a prime.
It is a super-3 number, since 3×138800073 (a number of 22 digits) contains 333 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13880047) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12153 + ... + 13245.
It is an arithmetic number, because the mean of its divisors is an integer number (895986).
Almost surely, 213880007 is an apocalyptic number.
13880007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.
13880007 is a deficient number, since it is larger than the sum of its proper divisors (7623657).
13880007 is a wasteful number, since it uses less digits than its factorization.
13880007 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1199 (or 1196 counting only the distinct ones).
The product of its (nonzero) digits is 1344, while the sum is 27.
The square root of 13880007 is about 3725.5881414885. The cubic root of 13880007 is about 240.3236778564.
Adding to 13880007 its reverse (70008831), we get a palindrome (83888838).
The spelling of 13880007 in words is "thirteen million, eight hundred eighty thousand, seven".
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