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13106489 = 111191499
BaseRepresentation
bin110001111111…
…110100111001
3220122212201112
4301333310321
511323401424
61144530105
7216255224
oct61776471
926585645
1013106489
117442110
124480935
13293b826
141a525bb
15123d60e
hexc7fd39

13106489 has 4 divisors (see below), whose sum is σ = 14298000. Its totient is φ = 11914980.

The previous prime is 13106479. The next prime is 13106491. The reversal of 13106489 is 98460131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-13106489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13106479) 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, 595739 + ... + 595760.

It is an arithmetic number, because the mean of its divisors is an integer number (3574500).

Almost surely, 213106489 is an apocalyptic number.

It is an amenable number.

13106489 is a deficient number, since it is larger than the sum of its proper divisors (1191511).

13106489 is a wasteful number, since it uses less digits than its factorization.

13106489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191510.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13106489 is about 3620.2885244135. The cubic root of 13106489 is about 235.7737525768.

The spelling of 13106489 in words is "thirteen million, one hundred six thousand, four hundred eighty-nine".

Divisors: 1 11 1191499 13106489