Search a number
-
+
389000171 = 72172916103
BaseRepresentation
bin10111001011111…
…010101111101011
31000002222020220202
4113023322233223
51244041001141
6102333342415
712432306200
oct2713725753
91002866822
10389000171
1118a64264a
12aa337a0b
136278c921
143993dca7
152423e49b
hex172fabeb

389000171 has 24 divisors (see below), whose sum is σ = 495681120. Its totient is φ = 302975232.

The previous prime is 389000119. The next prime is 389000179. The reversal of 389000171 is 171000983.

It is not a de Polignac number, because 389000171 - 26 = 389000107 is a prime.

It is a super-2 number, since 2×3890001712 = 302642266076058482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389000179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16106 + ... + 32208.

It is an arithmetic number, because the mean of its divisors is an integer number (20653380).

Almost surely, 2389000171 is an apocalyptic number.

389000171 is a deficient number, since it is larger than the sum of its proper divisors (106680949).

389000171 is a wasteful number, since it uses less digits than its factorization.

389000171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16163 (or 16156 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 389000171 is about 19723.0872583376. The cubic root of 389000171 is about 729.9894731703.

The spelling of 389000171 in words is "three hundred eighty-nine million, one hundred seventy-one", and thus it is an aban number.

Divisors: 1 7 17 29 49 119 203 493 833 1421 3451 16103 24157 112721 273751 466987 789047 1916257 3268909 7938779 13413799 22882363 55571453 389000171