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12855219 = 3131132917
BaseRepresentation
bin110001000010…
…011110110011
3220012010001020
4301002132303
511242331334
61135310523
7214160526
oct61023663
926163036
1012855219
117290353
12437b443
132881350
1419c8bbd
1511dde49
hexc427b3

12855219 has 16 divisors (see below), whose sum is σ = 18628512. Its totient is φ = 7838208.

The previous prime is 12855217. The next prime is 12855221. The reversal of 12855219 is 91255821.

12855219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12855217) and next prime (12855221).

It is not a de Polignac number, because 12855219 - 21 = 12855217 is a prime.

It is a super-2 number, since 2×128552192 = 330513311075922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12855219.

It is not an unprimeable number, because it can be changed into a prime (12855211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2949 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (1164282).

Almost surely, 212855219 is an apocalyptic number.

12855219 is a deficient number, since it is larger than the sum of its proper divisors (5773293).

12855219 is a wasteful number, since it uses less digits than its factorization.

12855219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046.

The product of its digits is 7200, while the sum is 33.

The square root of 12855219 is about 3585.4175489056. The cubic root of 12855219 is about 234.2573142858.

The spelling of 12855219 in words is "twelve million, eight hundred fifty-five thousand, two hundred nineteen".

Divisors: 1 3 13 39 113 339 1469 2917 4407 8751 37921 113763 329621 988863 4285073 12855219