Base | Representation |
---|---|
bin | 110100111100… |
… | …101101010101 |
3 | 222010011222121 |
4 | 310330231111 |
5 | 12023131044 |
6 | 1213255541 |
7 | 225656623 |
oct | 64745525 |
9 | 28104877 |
10 | 13880149 |
11 | 79203a8 |
12 | 47945b1 |
13 | 2b4ca0a |
14 | 1bb4513 |
15 | 1342984 |
hex | d3cb55 |
13880149 has 2 divisors, whose sum is σ = 13880150. Its totient is φ = 13880148.
The previous prime is 13880101. The next prime is 13880227. The reversal of 13880149 is 94108831.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9394225 + 4485924 = 3065^2 + 2118^2 .
It is a cyclic number.
It is not a de Polignac number, because 13880149 - 29 = 13879637 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13880549) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6940074 + 6940075.
It is an arithmetic number, because the mean of its divisors is an integer number (6940075).
Almost surely, 213880149 is an apocalyptic number.
It is an amenable number.
13880149 is a deficient number, since it is larger than the sum of its proper divisors (1).
13880149 is an equidigital number, since it uses as much as digits as its factorization.
13880149 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 6912, while the sum is 34.
The square root of 13880149 is about 3725.6071988335. The cubic root of 13880149 is about 240.3244974008.
The spelling of 13880149 in words is "thirteen million, eight hundred eighty thousand, one hundred forty-nine".
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