Search a number
-
+
13250223 = 34723369
BaseRepresentation
bin110010100010…
…111010101111
3220221011220000
4302202322233
511343001343
61151555343
7220424250
oct62427257
926834800
1013250223
1175300a8
12452bb53
13298c08c
141a8cb27
15126aed3
hexca2eaf

13250223 has 20 divisors (see below), whose sum is σ = 22622160. Its totient is φ = 7571232.

The previous prime is 13250213. The next prime is 13250227. The reversal of 13250223 is 32205231.

It is not a de Polignac number, because 13250223 - 28 = 13249967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13250196 and 13250205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11118 + ... + 12251.

It is an arithmetic number, because the mean of its divisors is an integer number (1131108).

Almost surely, 213250223 is an apocalyptic number.

13250223 is a deficient number, since it is larger than the sum of its proper divisors (9371937).

13250223 is an equidigital number, since it uses as much as digits as its factorization.

13250223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23388 (or 23379 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13250223 is about 3640.0855759171. The cubic root of 13250223 is about 236.6325020665.

Adding to 13250223 its reverse (32205231), we get a palindrome (45455454).

The spelling of 13250223 in words is "thirteen million, two hundred fifty thousand, two hundred twenty-three".

Divisors: 1 3 7 9 21 27 63 81 189 567 23369 70107 163583 210321 490749 630963 1472247 1892889 4416741 13250223