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13258139 = 108712197
BaseRepresentation
bin110010100100…
…110110011011
3220221120202012
4302210312123
511343230024
61152100135
7220456316
oct62446633
926846665
1013258139
117536044
12453464b
13299286b
141a9197d
15126d50e
hexca4d9b

13258139 has 4 divisors (see below), whose sum is σ = 13271424. Its totient is φ = 13244856.

The previous prime is 13258127. The next prime is 13258151. The reversal of 13258139 is 93185231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93185231 = 428321757.

It is an interprime number because it is at equal distance from previous prime (13258127) and next prime (13258151).

It is a cyclic number.

It is not a de Polignac number, because 13258139 - 216 = 13192603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13258199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5012 + ... + 7185.

It is an arithmetic number, because the mean of its divisors is an integer number (3317856).

Almost surely, 213258139 is an apocalyptic number.

13258139 is a deficient number, since it is larger than the sum of its proper divisors (13285).

13258139 is a wasteful number, since it uses less digits than its factorization.

13258139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13284.

The product of its digits is 6480, while the sum is 32.

The square root of 13258139 is about 3641.1727506396. The cubic root of 13258139 is about 236.6796159901.

The spelling of 13258139 in words is "thirteen million, two hundred fifty-eight thousand, one hundred thirty-nine".

Divisors: 1 1087 12197 13258139