Search a number
-
+
12000261 = 3713113389
BaseRepresentation
bin101101110001…
…110000000101
3211120200021010
4231301300011
511033002021
61105112433
7204000120
oct55616005
924520233
1012000261
116856a79
124028719
132642160
1418453b7
1510c0976
hexb71c05

12000261 has 32 divisors (see below), whose sum is σ = 19918080. Its totient is φ = 6257664.

The previous prime is 12000259. The next prime is 12000269. The reversal of 12000261 is 16200021.

It is not a de Polignac number, because 12000261 - 21 = 12000259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000269) 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 31 ways as a sum of consecutive naturals, for example, 30655 + ... + 31043.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 212000261 is an apocalyptic number.

It is an amenable number.

12000261 is a deficient number, since it is larger than the sum of its proper divisors (7917819).

12000261 is a wasteful number, since it uses less digits than its factorization.

12000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12000261 is about 3464.1392870380. The cubic root of 12000261 is about 228.9445083343.

Adding to 12000261 its reverse (16200021), we get a palindrome (28200282).

The spelling of 12000261 in words is "twelve million, two hundred sixty-one", and thus it is an aban number.

Divisors: 1 3 7 13 21 39 91 113 273 339 389 791 1167 1469 2373 2723 4407 5057 8169 10283 15171 30849 35399 43957 106197 131871 307699 571441 923097 1714323 4000087 12000261