Search a number
-
+
13139833 = 77923761
BaseRepresentation
bin110010000111…
…111101111001
3220201120110111
4302013331321
511330433313
61145344321
7216454360
oct62077571
926646414
1013139833
117465173
1244980a1
132950a65
141a607d7
15124843d
hexc87f79

13139833 has 8 divisors (see below), whose sum is σ = 15207680. Its totient is φ = 11119680.

The previous prime is 13139821. The next prime is 13139851. The reversal of 13139833 is 33893131.

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 13139833 - 217 = 13008761 is a prime.

It is a super-2 number, since 2×131398332 = 345310422535778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13139795 and 13139804.

It is not an unprimeable number, because it can be changed into a prime (13139873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11328 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (1900960).

Almost surely, 213139833 is an apocalyptic number.

It is an amenable number.

13139833 is a deficient number, since it is larger than the sum of its proper divisors (2067847).

13139833 is an equidigital number, since it uses as much as digits as its factorization.

13139833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23847.

The product of its digits is 5832, while the sum is 31.

The square root of 13139833 is about 3624.8907569746. The cubic root of 13139833 is about 235.9735259492.

The spelling of 13139833 in words is "thirteen million, one hundred thirty-nine thousand, eight hundred thirty-three".

Divisors: 1 7 79 553 23761 166327 1877119 13139833