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13678223 = 133133941
BaseRepresentation
bin110100001011…
…011010001111
3221201220222212
4310023122033
512000200343
61205101035
7224156126
oct64133217
927656885
1013678223
1177a2719
1246b777b
132aabb30
141b60abd
151302c18
hexd0b68f

13678223 has 8 divisors (see below), whose sum is σ = 15206016. Its totient is φ = 12218400.

The previous prime is 13678219. The next prime is 13678241. The reversal of 13678223 is 32287631.

It is a happy number.

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 13678223 - 22 = 13678219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13678223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13678243) 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, 16568 + ... + 17373.

It is an arithmetic number, because the mean of its divisors is an integer number (1900752).

Almost surely, 213678223 is an apocalyptic number.

13678223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13678223 is a deficient number, since it is larger than the sum of its proper divisors (1527793).

13678223 is a wasteful number, since it uses less digits than its factorization.

13678223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33985.

The product of its digits is 12096, while the sum is 32.

The square root of 13678223 is about 3698.4081710920. The cubic root of 13678223 is about 239.1534002335.

The spelling of 13678223 in words is "thirteen million, six hundred seventy-eight thousand, two hundred twenty-three".

Divisors: 1 13 31 403 33941 441233 1052171 13678223