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13258138 = 211235903
BaseRepresentation
bin110010100100…
…110110011010
3220221120202011
4302210312122
511343230023
61152100134
7220456315
oct62446632
926846664
1013258138
117536043
12453464a
13299286a
141a9197c
15126d50d
hexca4d9a

13258138 has 8 divisors (see below), whose sum is σ = 19908288. Its totient is φ = 6622044.

The previous prime is 13258127. The next prime is 13258151. The reversal of 13258138 is 83185231.

13258138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706 + ... + 5197.

It is an arithmetic number, because the mean of its divisors is an integer number (2488536).

Almost surely, 213258138 is an apocalyptic number.

13258138 is a deficient number, since it is larger than the sum of its proper divisors (6650150).

13258138 is a wasteful number, since it uses less digits than its factorization.

13258138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7028.

The product of its digits is 5760, while the sum is 31.

The square root of 13258138 is about 3641.1726133212. The cubic root of 13258138 is about 236.6796100395.

The spelling of 13258138 in words is "thirteen million, two hundred fifty-eight thousand, one hundred thirty-eight".

Divisors: 1 2 1123 2246 5903 11806 6629069 13258138