Search a number
-
+
13078955 = 52615791
BaseRepresentation
bin110001111001…
…000110101011
3220121110221202
4301321012223
511322011310
61144154415
7216112031
oct61710653
926543852
1013078955
11742345a
124468a0b
13292c136
141a46551
1512353a5
hexc791ab

13078955 has 4 divisors (see below), whose sum is σ = 15694752. Its totient is φ = 10463160.

The previous prime is 13078907. The next prime is 13078999. The reversal of 13078955 is 55987031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55987031 = 371513163.

It is not a de Polignac number, because 13078955 - 28 = 13078699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1307891 + ... + 1307900.

It is an arithmetic number, because the mean of its divisors is an integer number (3923688).

Almost surely, 213078955 is an apocalyptic number.

13078955 is a deficient number, since it is larger than the sum of its proper divisors (2615797).

13078955 is an equidigital number, since it uses as much as digits as its factorization.

13078955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615796.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 13078955 is about 3616.4837895392. The cubic root of 13078955 is about 235.6085329978.

The spelling of 13078955 in words is "thirteen million, seventy-eight thousand, nine hundred fifty-five".

Divisors: 1 5 2615791 13078955