Search a number
-
+
168930032 = 2423479767
BaseRepresentation
bin10100001000110…
…10101011110000
3102202212112102212
422010122223300
5321221230112
624432431252
74120611245
oct1204325360
9382775385
10168930032
11873a16a7
12486a8528
1328cc92cb
14186155cc
15ec6d522
hexa11aaf0

168930032 has 40 divisors (see below), whose sum is σ = 348834816. Its totient is φ = 79065536.

The previous prime is 168930031. The next prime is 168930043. The reversal of 168930032 is 230039861.

Together with 179904784 it forms an amicable pair .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168930031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12413 + ... + 22179.

Almost surely, 2168930032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168930032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174417408).

168930032 is an abundant number, since it is smaller than the sum of its proper divisors (179904784).

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

168930032 is a wasteful number, since it uses less digits than its factorization.

168930032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845 (or 9839 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 168930032 is about 12997.3086444848. The cubic root of 168930032 is about 552.8011715625.

Adding to 168930032 its reverse (230039861), we get a palindrome (398969893).

The spelling of 168930032 in words is "one hundred sixty-eight million, nine hundred thirty thousand, thirty-two".

Divisors: 1 2 4 8 16 23 46 47 92 94 184 188 368 376 752 1081 2162 4324 8648 9767 17296 19534 39068 78136 156272 224641 449282 459049 898564 918098 1797128 1836196 3594256 3672392 7344784 10558127 21116254 42232508 84465016 168930032