Search a number
-
+
13930285 = 510932549
BaseRepresentation
bin110101001000…
…111100101101
3222012201202111
4311020330231
512031232120
61214324021
7226256035
oct65107455
928181674
1013930285
117955036
1247b9611
132b69795
141bc88c5
15135275a
hexd48f2d

13930285 has 8 divisors (see below), whose sum is σ = 16738200. Its totient is φ = 11129664.

The previous prime is 13930261. The next prime is 13930289. The reversal of 13930285 is 58203931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8649481 + 5280804 = 2941^2 + 2298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13930285 - 211 = 13928237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13930289) 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 7 ways as a sum of consecutive naturals, for example, 4191 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (2092275).

Almost surely, 213930285 is an apocalyptic number.

It is an amenable number.

13930285 is a deficient number, since it is larger than the sum of its proper divisors (2807915).

13930285 is a wasteful number, since it uses less digits than its factorization.

13930285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 13930285 is about 3732.3297014063. The cubic root of 13930285 is about 240.6135056071.

The spelling of 13930285 in words is "thirteen million, nine hundred thirty thousand, two hundred eighty-five".

Divisors: 1 5 1093 2549 5465 12745 2786057 13930285