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13189219 = 99113309
BaseRepresentation
bin110010010100…
…000001100011
3220211002012121
4302110001203
511334023334
61150405111
7220051351
oct62240143
926732177
1013189219
11749928a
124500797
13296a394
141a747d1
151257db4
hexc94063

13189219 has 4 divisors (see below), whose sum is σ = 13203520. Its totient is φ = 13174920.

The previous prime is 13189217. The next prime is 13189223. The reversal of 13189219 is 91298131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91298131 = 312945101.

It is a cyclic number.

It is not a de Polignac number, because 13189219 - 21 = 13189217 is a prime.

It is a super-2 number, since 2×131892192 = 347910995659922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13189217) 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, 5664 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (3300880).

Almost surely, 213189219 is an apocalyptic number.

13189219 is a deficient number, since it is larger than the sum of its proper divisors (14301).

13189219 is an equidigital number, since it uses as much as digits as its factorization.

13189219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14300.

The product of its digits is 3888, while the sum is 34.

The square root of 13189219 is about 3631.6964355518. The cubic root of 13189219 is about 236.2687914655.

The spelling of 13189219 in words is "thirteen million, one hundred eighty-nine thousand, two hundred nineteen".

Divisors: 1 991 13309 13189219