Search a number
-
+
388585 = 52331109
BaseRepresentation
bin1011110110111101001
3201202001001
41132313221
544413320
612155001
73205621
oct1366751
9652031
10388585
11245a4a
12168a61
13107b42
14a1881
157a20a
hex5ede9

388585 has 16 divisors (see below), whose sum is σ = 506880. Its totient is φ = 285120.

The previous prime is 388573. The next prime is 388621. The reversal of 388585 is 585883.

It is not a de Polignac number, because 388585 - 211 = 386537 is a prime.

It is an unprimeable number.

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, 3511 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (31680).

388585 is a Friedman number, since it can be written as 5^8-85*8*3, using all its digits and the basic arithmetic operations.

2388585 is an apocalyptic number.

It is an amenable number.

388585 is a deficient number, since it is larger than the sum of its proper divisors (118295).

388585 is a wasteful number, since it uses less digits than its factorization.

388585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168.

The product of its digits is 38400, while the sum is 37.

The square root of 388585 is about 623.3658636788. The cubic root of 388585 is about 72.9729680359.

It can be divided in two parts, 3 and 88585, that added together give a palindrome (88588).

The spelling of 388585 in words is "three hundred eighty-eight thousand, five hundred eighty-five".

Divisors: 1 5 23 31 109 115 155 545 713 2507 3379 3565 12535 16895 77717 388585