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13219219 = 131676089
BaseRepresentation
bin110010011011…
…010110010011
3220212121100201
4302123112103
511341003334
61151200031
7220234666
oct62332623
926777321
1013219219
117509882
124516017
13297ac30
141a816dd
151261c14
hexc9b593

13219219 has 8 divisors (see below), whose sum is σ = 14323680. Its totient is φ = 12127296.

The previous prime is 13219211. The next prime is 13219229. The reversal of 13219219 is 91291231.

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

It is a cyclic number.

It is not a de Polignac number, because 13219219 - 23 = 13219211 is a prime.

It is a super-2 number, since 2×132192192 = 349495501939922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13219211) 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 7 ways as a sum of consecutive naturals, for example, 874 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (1790460).

Almost surely, 213219219 is an apocalyptic number.

13219219 is a deficient number, since it is larger than the sum of its proper divisors (1104461).

13219219 is a wasteful number, since it uses less digits than its factorization.

13219219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269.

The product of its digits is 972, while the sum is 28.

The square root of 13219219 is about 3635.8243906988. The cubic root of 13219219 is about 236.4477936336.

The spelling of 13219219 in words is "thirteen million, two hundred nineteen thousand, two hundred nineteen".

Divisors: 1 13 167 2171 6089 79157 1016863 13219219