Search a number
-
+
388672 = 266073
BaseRepresentation
bin1011110111001000000
3201202011021
41132321000
544414142
612155224
73206104
oct1367100
9652137
10388672
11246019
12168b14
13107bab
14a1904
157a267
hex5ee40

388672 has 14 divisors (see below), whose sum is σ = 771398. Its totient is φ = 194304.

The previous prime is 388657. The next prime is 388673. The reversal of 388672 is 276883.

It is a happy number.

388672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 379456 + 9216 = 616^2 + 96^2 .

It is a d-powerful number, because it can be written as 310 + 84 + 66 + 86 + 73 + 214 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388673) by changing a digit.

388672 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2973 + ... + 3100.

2388672 is an apocalyptic number.

388672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

388672 is a deficient number, since it is larger than the sum of its proper divisors (382726).

388672 is an equidigital number, since it uses as much as digits as its factorization.

388672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6085 (or 6075 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 388672 is about 623.4356422278. The cubic root of 388672 is about 72.9784135837.

The spelling of 388672 in words is "three hundred eighty-eight thousand, six hundred seventy-two".

Divisors: 1 2 4 8 16 32 64 6073 12146 24292 48584 97168 194336 388672