Search a number
-
+
38639082 = 2331293709
BaseRepresentation
bin1001001101100…
…1010111101010
32200201001212010
42103121113222
534342422312
63500100350
7646266246
oct223312752
980631763
1038639082
111a8a1129
1210b346b6
13800b281
1451bb426
1535d393c
hex24d95ea

38639082 has 32 divisors (see below), whose sum is σ = 80156160. Its totient is φ = 12404160.

The previous prime is 38639071. The next prime is 38639087. The reversal of 38639082 is 28093683.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 38639082.

It is not an unprimeable number, because it can be changed into a prime (38639087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54144 + ... + 54852.

It is an arithmetic number, because the mean of its divisors is an integer number (2504880).

Almost surely, 238639082 is an apocalyptic number.

38639082 is an abundant number, since it is smaller than the sum of its proper divisors (41517078).

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

38639082 is a wasteful number, since it uses less digits than its factorization.

38639082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 38639082 is about 6216.0342663148. The cubic root of 38639082 is about 338.0717901266.

The spelling of 38639082 in words is "thirty-eight million, six hundred thirty-nine thousand, eighty-two".

Divisors: 1 2 3 6 31 62 93 186 293 586 709 879 1418 1758 2127 4254 9083 18166 21979 27249 43958 54498 65937 131874 207737 415474 623211 1246422 6439847 12879694 19319541 38639082