Search a number
-
+
389016 = 23331801
BaseRepresentation
bin1011110111110011000
3201202122000
41132332120
544422031
612201000
73210105
oct1367630
9652560
10389016
11246301
12169160
131080b4
14a1aac
157a3e6
hex5ef98

389016 has 32 divisors (see below), whose sum is σ = 1081200. Its totient is φ = 129600.

The previous prime is 389003. The next prime is 389023. The reversal of 389016 is 610983.

It is a Cunningham number, because it is equal to 733-1.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685 + ... + 1116.

389016 is a Friedman number, since it can be written as (9*8+6^0)^3-1, using all its digits and the basic arithmetic operations.

2389016 is an apocalyptic number.

389016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

389016 is an abundant number, since it is smaller than the sum of its proper divisors (692184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389016 is a wasteful number, since it uses less digits than its factorization.

389016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 389016 is about 623.7114717560. The cubic root of 389016 is about 72.9999374491. Note that the first 4 decimals are identical.

Adding to 389016 its reverse (610983), we get a palindrome (999999).

The spelling of 389016 in words is "three hundred eighty-nine thousand, sixteen".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 1801 3602 5403 7204 10806 14408 16209 21612 32418 43224 48627 64836 97254 129672 194508 389016