Search a number
-
+
12994471 = 723431877
BaseRepresentation
bin110001100100…
…011110100111
3220110012001201
4301210132213
511311310341
61142303331
7215310520
oct61443647
926405051
1012994471
117375a36
124427b47
1328cc849
141a23847
15121a331
hexc647a7

12994471 has 16 divisors (see below), whose sum is σ = 15865344. Its totient is φ = 10400544.

The previous prime is 12994469. The next prime is 12994481. The reversal of 12994471 is 17449921.

It is not a de Polignac number, because 12994471 - 21 = 12994469 is a prime.

It is a super-3 number, since 3×129944713 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12994471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12994441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5985 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (991584).

Almost surely, 212994471 is an apocalyptic number.

12994471 is a deficient number, since it is larger than the sum of its proper divisors (2870873).

12994471 is a wasteful number, since it uses less digits than its factorization.

12994471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950.

The product of its digits is 18144, while the sum is 37.

The square root of 12994471 is about 3604.7844595759. The cubic root of 12994471 is about 235.1001293541.

The spelling of 12994471 in words is "twelve million, nine hundred ninety-four thousand, four hundred seventy-one".

Divisors: 1 7 23 43 161 301 989 1877 6923 13139 43171 80711 302197 564977 1856353 12994471