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13285279 = 717111641
BaseRepresentation
bin110010101011…
…011110011111
3220222221222101
4302223132133
511400112104
61152425531
7220631410
oct62533637
926887871
1013285279
117554477
1245482a7
1329a2017
141a9b807
1512765a4
hexcab79f

13285279 has 8 divisors (see below), whose sum is σ = 16076448. Its totient is φ = 10717440.

The previous prime is 13285273. The next prime is 13285291. The reversal of 13285279 is 97258231.

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 13285279 - 29 = 13284767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13285273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55702 + ... + 55939.

It is an arithmetic number, because the mean of its divisors is an integer number (2009556).

Almost surely, 213285279 is an apocalyptic number.

13285279 is a deficient number, since it is larger than the sum of its proper divisors (2791169).

13285279 is a wasteful number, since it uses less digits than its factorization.

13285279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111665.

The product of its digits is 30240, while the sum is 37.

The square root of 13285279 is about 3644.8976666019. The cubic root of 13285279 is about 236.8410038164.

The spelling of 13285279 in words is "thirteen million, two hundred eighty-five thousand, two hundred seventy-nine".

Divisors: 1 7 17 119 111641 781487 1897897 13285279