Search a number
-
+
38122005 = 354161987
BaseRepresentation
bin1001000101101…
…1001000010101
32122201210120010
42101123020111
534224401010
63441030433
7642013605
oct221331025
978653503
1038122005
111a578699
1210925419
137b89acc
1450c4c05
153530620
hex245b215

38122005 has 16 divisors (see below), whose sum is σ = 62483904. Its totient is φ = 19835520.

The previous prime is 38121997. The next prime is 38122009. The reversal of 38122005 is 50022183.

38122005 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 38122005 - 23 = 38121997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38122009) 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 15 ways as a sum of consecutive naturals, for example, 30379 + ... + 31608.

It is an arithmetic number, because the mean of its divisors is an integer number (3905244).

Almost surely, 238122005 is an apocalyptic number.

It is an amenable number.

38122005 is a deficient number, since it is larger than the sum of its proper divisors (24361899).

38122005 is a wasteful number, since it uses less digits than its factorization.

38122005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62036.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 38122005 is about 6174.3019848401. The cubic root of 38122005 is about 336.5569613910.

Adding to 38122005 its reverse (50022183), we get a palindrome (88144188).

The spelling of 38122005 in words is "thirty-eight million, one hundred twenty-two thousand, five".

Divisors: 1 3 5 15 41 123 205 615 61987 185961 309935 929805 2541467 7624401 12707335 38122005