Search a number
-
+
13078930 = 251307893
BaseRepresentation
bin110001111001…
…000110010010
3220121110220211
4301321012102
511322011210
61144154334
7216111664
oct61710622
926543824
1013078930
117423437
1244689aa
13292c117
141a46534
15123538a
hexc79192

13078930 has 8 divisors (see below), whose sum is σ = 23542092. Its totient is φ = 5231568.

The previous prime is 13078907. The next prime is 13078999. The reversal of 13078930 is 3987031.

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 1058841 = 3467^2 + 1029^2 .

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

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 13078892 and 13078901.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 653937 + ... + 653956.

Almost surely, 213078930 is an apocalyptic number.

13078930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13078930 is a deficient number, since it is larger than the sum of its proper divisors (10463162).

13078930 is a wasteful number, since it uses less digits than its factorization.

13078930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307900.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13078930 is about 3616.4803331416. The cubic root of 13078930 is about 235.6083828783.

The spelling of 13078930 in words is "thirteen million, seventy-eight thousand, nine hundred thirty".

Divisors: 1 2 5 10 1307893 2615786 6539465 13078930