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388223 = 11291217
BaseRepresentation
bin1011110110001111111
3201201112122
41132301333
544410343
612153155
73204563
oct1366177
9651478
10388223
11245750
121687bb
13107924
14a16a3
157a068
hex5ec7f

388223 has 8 divisors (see below), whose sum is σ = 438480. Its totient is φ = 340480.

The previous prime is 388211. The next prime is 388231. The reversal of 388223 is 322883.

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 388223 - 26 = 388159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388192 and 388201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388253) 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, 290 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2388223 is an apocalyptic number.

388223 is a deficient number, since it is larger than the sum of its proper divisors (50257).

388223 is a wasteful number, since it uses less digits than its factorization.

388223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 2304, while the sum is 26.

The square root of 388223 is about 623.0754368453. The cubic root of 388223 is about 72.9503008188.

The spelling of 388223 in words is "three hundred eighty-eight thousand, two hundred twenty-three".

Divisors: 1 11 29 319 1217 13387 35293 388223