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13000223 = 17764719
BaseRepresentation
bin110001100101…
…111000011111
3220110110221202
4301211320133
511312001343
61142350115
7215333345
oct61457037
926413852
1013000223
11737a295
12442b33b
132902352
141a25995
15121bdb8
hexc65e1f

13000223 has 4 divisors (see below), whose sum is σ = 13764960. Its totient is φ = 12235488.

The previous prime is 13000219. The next prime is 13000243. The reversal of 13000223 is 32200031.

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

It is a cyclic number.

It is not a de Polignac number, because 13000223 - 22 = 13000219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000213) 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, 382343 + ... + 382376.

It is an arithmetic number, because the mean of its divisors is an integer number (3441240).

Almost surely, 213000223 is an apocalyptic number.

13000223 is a deficient number, since it is larger than the sum of its proper divisors (764737).

13000223 is an equidigital number, since it uses as much as digits as its factorization.

13000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764736.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 13000223 is about 3605.5821998673. The cubic root of 13000223 is about 235.1348132455.

Adding to 13000223 its reverse (32200031), we get a palindrome (45200254).

The spelling of 13000223 in words is "thirteen million, two hundred twenty-three", and thus it is an aban number.

Divisors: 1 17 764719 13000223