Base | Representation |
---|---|
bin | 110101000010… |
… | …001001100110 |
3 | 222011022120010 |
4 | 311002021212 |
5 | 12024334223 |
6 | 1213551050 |
7 | 226111614 |
oct | 65021146 |
9 | 28138503 |
10 | 13902438 |
11 | 7936120 |
12 | 47a5486 |
13 | 2b59bc4 |
14 | 1bbc6b4 |
15 | 1349393 |
hex | d42266 |
13902438 has 16 divisors (see below), whose sum is σ = 30332736. Its totient is φ = 4212840.
The previous prime is 13902437. The next prime is 13902451. The reversal of 13902438 is 83420931.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13902431) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105256 + ... + 105387.
It is an arithmetic number, because the mean of its divisors is an integer number (1895796).
Almost surely, 213902438 is an apocalyptic number.
13902438 is an abundant number, since it is smaller than the sum of its proper divisors (16430298).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13902438 is a wasteful number, since it uses less digits than its factorization.
13902438 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 210659.
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 13902438 is about 3728.5973233912. The cubic root of 13902438 is about 240.4530677795.
It can be divided in two parts, 1390 and 2438, that added together give a triangular number (3828 = T87).
The spelling of 13902438 in words is "thirteen million, nine hundred two thousand, four hundred thirty-eight".
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