Base | Representation |
---|---|
bin | 1011110110001110101 |
3 | 201201112021 |
4 | 1132301311 |
5 | 44410323 |
6 | 12153141 |
7 | 3204550 |
oct | 1366165 |
9 | 651467 |
10 | 388213 |
11 | 245741 |
12 | 1687b1 |
13 | 107917 |
14 | a1697 |
15 | 7a05d |
hex | 5ec75 |
388213 has 8 divisors (see below), whose sum is σ = 458240. Its totient is φ = 321840.
The previous prime is 388211. The next prime is 388231. The reversal of 388213 is 312883.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 388213 - 21 = 388211 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (388211) 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, 678 + ... + 1111.
It is an arithmetic number, because the mean of its divisors is an integer number (57280).
2388213 is an apocalyptic number.
It is an amenable number.
388213 is a deficient number, since it is larger than the sum of its proper divisors (70027).
388213 is a wasteful number, since it uses less digits than its factorization.
388213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1827.
The product of its digits is 1152, while the sum is 25.
The square root of 388213 is about 623.0674120832. The cubic root of 388213 is about 72.9496744527.
The spelling of 388213 in words is "three hundred eighty-eight thousand, two hundred thirteen".
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