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13000626 = 232722257
BaseRepresentation
bin110001100101…
…111110110010
3220110111111200
4301211332302
511312010001
61142352030
7215334462
oct61457662
926414450
1013000626
11737a621
12442b616
1329025a2
141a25ba2
15121c086
hexc65fb2

13000626 has 12 divisors (see below), whose sum is σ = 28168062. Its totient is φ = 4333536.

The previous prime is 13000601. The next prime is 13000627. The reversal of 13000626 is 62600031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10595025 + 2405601 = 3255^2 + 1551^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 722257 = 13000626 / (1 + 3 + 0 + 0 + 0 + 6 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 13000599 and 13000608.

It is not an unprimeable number, because it can be changed into a prime (13000627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361111 + ... + 361146.

Almost surely, 213000626 is an apocalyptic number.

13000626 is an abundant number, since it is smaller than the sum of its proper divisors (15167436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13000626 is a wasteful number, since it uses less digits than its factorization.

13000626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722265 (or 722262 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 13000626 is about 3605.6380849997. The cubic root of 13000626 is about 235.1372429051.

Adding to 13000626 its reverse (62600031), we get a palindrome (75600657).

The spelling of 13000626 in words is "thirteen million, six hundred twenty-six", and thus it is an aban number.

Divisors: 1 2 3 6 9 18 722257 1444514 2166771 4333542 6500313 13000626