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12863028 = 2231071919
BaseRepresentation
bin110001000100…
…011000110100
3220012111202110
4301010120310
511243104103
61135411020
7214222353
oct61043064
926174673
1012863028
117296202
124383a70
132884a79
1419cb99a
1511e1403
hexc44634

12863028 has 12 divisors (see below), whose sum is σ = 30013760. Its totient is φ = 4287672.

The previous prime is 12863027. The next prime is 12863041. The reversal of 12863028 is 82036821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12862986 and 12863004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535948 + ... + 535971.

Almost surely, 212863028 is an apocalyptic number.

It is an amenable number.

12863028 is an abundant number, since it is smaller than the sum of its proper divisors (17150732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12863028 is a wasteful number, since it uses less digits than its factorization.

12863028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071926 (or 1071924 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12863028 is about 3586.5063780788. The cubic root of 12863028 is about 234.3047384767.

Adding to 12863028 its reverse (82036821), we get a palindrome (94899849).

The spelling of 12863028 in words is "twelve million, eight hundred sixty-three thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 1071919 2143838 3215757 4287676 6431514 12863028