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12818853 = 321424317
BaseRepresentation
bin110000111001…
…100110100101
3220010021011100
4300321212211
511240200403
61134430313
7213646515
oct60714645
926107140
1012818853
117265aa3
124362399
13286a928
1419b9845
1511d32a3
hexc399a5

12818853 has 6 divisors (see below), whose sum is σ = 18516134. Its totient is φ = 8545896.

The previous prime is 12818851. The next prime is 12818879. The reversal of 12818853 is 35881821.

12818853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 5673924 = 2673^2 + 2382^2 .

It is not a de Polignac number, because 12818853 - 21 = 12818851 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 (12818851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 712150 + ... + 712167.

Almost surely, 212818853 is an apocalyptic number.

It is an amenable number.

12818853 is a deficient number, since it is larger than the sum of its proper divisors (5697281).

12818853 is a wasteful number, since it uses less digits than its factorization.

12818853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424323 (or 1424320 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 12818853 is about 3580.3425813740. The cubic root of 12818853 is about 234.0362096059.

It can be divided in two parts, 128 and 18853, that added together give a palindrome (18981).

The spelling of 12818853 in words is "twelve million, eight hundred eighteen thousand, eight hundred fifty-three".

Divisors: 1 3 9 1424317 4272951 12818853