Search a number
-
+
385679 = 7217463
BaseRepresentation
bin1011110001010001111
3201121001102
41132022033
544320204
612133315
73164300
oct1361217
9647042
10385679
11243848
1216723b
13106718
14a07a7
157941e
hex5e28f

385679 has 12 divisors (see below), whose sum is σ = 476064. Its totient is φ = 310464.

The previous prime is 385663. The next prime is 385709. The reversal of 385679 is 976583.

It is not a de Polignac number, because 385679 - 24 = 385663 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 (385639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 602 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (39672).

2385679 is an apocalyptic number.

385679 is a deficient number, since it is larger than the sum of its proper divisors (90385).

385679 is a wasteful number, since it uses less digits than its factorization.

385679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 487 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 385679 is about 621.0305950595. The cubic root of 385679 is about 72.7906052966.

Subtracting from 385679 its sum of digits (38), we obtain a square (385641 = 6212).

The spelling of 385679 in words is "three hundred eighty-five thousand, six hundred seventy-nine".

Divisors: 1 7 17 49 119 463 833 3241 7871 22687 55097 385679