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13050889 = 61213949
BaseRepresentation
bin110001110010…
…010000001001
3220120001110021
4301302100021
511320112024
61143420441
7215634145
oct61622011
926501407
1013050889
117404365
124454721
13291c427
141a3a225
15122bde4
hexc72409

13050889 has 4 divisors (see below), whose sum is σ = 13264900. Its totient is φ = 12836880.

The previous prime is 13050881. The next prime is 13050893. The reversal of 13050889 is 98805031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4687225 + 8363664 = 2165^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 13050889 - 23 = 13050881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13050881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106914 + ... + 107035.

It is an arithmetic number, because the mean of its divisors is an integer number (3316225).

Almost surely, 213050889 is an apocalyptic number.

It is an amenable number.

13050889 is a deficient number, since it is larger than the sum of its proper divisors (214011).

13050889 is an equidigital number, since it uses as much as digits as its factorization.

13050889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214010.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 13050889 is about 3612.6014172615. The cubic root of 13050889 is about 235.4398822991.

The spelling of 13050889 in words is "thirteen million, fifty thousand, eight hundred eighty-nine".

Divisors: 1 61 213949 13050889