Search a number
-
+
13049178289 = 72163192
BaseRepresentation
bin11000010011100101…
…01010100010110001
31020200102022221101121
430021302222202301
5203211042201124
65554505102241
7641241120400
oct141162524261
936612287347
1013049178289
115596a14874
122642187981
1312cc630094
148bb0cb637
155159182e4
hex309caa8b1

13049178289 has 9 divisors (see below), whose sum is σ = 15180586617. Its totient is φ = 11184324564.

The previous prime is 13049178269. The next prime is 13049178293. The reversal of 13049178289 is 98287194031.

The square root of 13049178289 is 114233.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13049178289 - 29 = 13049177777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13049178239) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 791472 + ... + 807790.

Almost surely, 213049178289 is an apocalyptic number.

13049178289 is the 114233-rd square number.

13049178289 is the 57117-th centered octagonal number.

It is an amenable number.

13049178289 is a deficient number, since it is larger than the sum of its proper divisors (2131408328).

13049178289 is an frugal number, since it uses more digits than its factorization.

13049178289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32652 (or 16326 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 13049178289 in words is "thirteen billion, forty-nine million, one hundred seventy-eight thousand, two hundred eighty-nine".

Divisors: 1 7 49 16319 114233 799631 266309761 1864168327 13049178289