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13679225 = 52778167
BaseRepresentation
bin110100001011…
…101001111001
3221201222100222
4310023221321
512000213400
61205105425
7224162060
oct64135171
927658328
1013679225
1177a344a
1246b8275
132aac421
141b611d7
151303185
hexd0ba79

13679225 has 12 divisors (see below), whose sum is σ = 19385664. Its totient is φ = 9379920.

The previous prime is 13679207. The next prime is 13679257. The reversal of 13679225 is 52297631.

It is not a de Polignac number, because 13679225 - 26 = 13679161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38909 + ... + 39258.

It is an arithmetic number, because the mean of its divisors is an integer number (1615472).

Almost surely, 213679225 is an apocalyptic number.

It is an amenable number.

13679225 is a deficient number, since it is larger than the sum of its proper divisors (5706439).

13679225 is an equidigital number, since it uses as much as digits as its factorization.

13679225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78184 (or 78179 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 13679225 is about 3698.5436322964. The cubic root of 13679225 is about 239.1592398287.

The spelling of 13679225 in words is "thirteen million, six hundred seventy-nine thousand, two hundred twenty-five".

Divisors: 1 5 7 25 35 175 78167 390835 547169 1954175 2735845 13679225