Search a number
-
+
388113349 = 13171799811
BaseRepresentation
bin10111001000100…
…010001111000101
31000001022012102111
4113020202033011
51243324111344
6102302341021
712421623541
oct2710421705
91001265374
10388113349
1118a097338
12a9b8a771
136253c090
143978ca21
1524116834
hex172223c5

388113349 has 16 divisors (see below), whose sum is σ = 445072320. Its totient is φ = 335266560.

The previous prime is 388113347. The next prime is 388113353. The reversal of 388113349 is 943311883.

It is a cyclic number.

It is not a de Polignac number, because 388113349 - 21 = 388113347 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 (388113347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34654 + ... + 44464.

It is an arithmetic number, because the mean of its divisors is an integer number (27817020).

Almost surely, 2388113349 is an apocalyptic number.

It is an amenable number.

388113349 is a deficient number, since it is larger than the sum of its proper divisors (56958971).

388113349 is a wasteful number, since it uses less digits than its factorization.

388113349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020.

The product of its digits is 62208, while the sum is 40.

The square root of 388113349 is about 19700.5926053000. The cubic root of 388113349 is about 729.4343206330.

The spelling of 388113349 in words is "three hundred eighty-eight million, one hundred thirteen thousand, three hundred forty-nine".

Divisors: 1 13 17 179 221 2327 3043 9811 39559 127543 166787 1756169 2168231 22830197 29854873 388113349