Search a number
-
+
388071 = 351597
BaseRepresentation
bin1011110101111100111
3201201100000
41132233213
544404241
612152343
73204255
oct1365747
9651300
10388071
11245622
121686b3
13107838
14a15d5
1579eb6
hex5ebe7

388071 has 12 divisors (see below), whose sum is σ = 581672. Its totient is φ = 258552.

The previous prime is 388067. The next prime is 388081. The reversal of 388071 is 170883.

It is not a de Polignac number, because 388071 - 22 = 388067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556 + ... + 1041.

2388071 is an apocalyptic number.

388071 is a deficient number, since it is larger than the sum of its proper divisors (193601).

388071 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 13 representation: 388071 = (107838)13.

388071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 388071 is about 622.9534493042. The cubic root of 388071 is about 72.9407788919.

The spelling of 388071 in words is "three hundred eighty-eight thousand, seventy-one".

Divisors: 1 3 9 27 81 243 1597 4791 14373 43119 129357 388071