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12638000023 = 114128022173
BaseRepresentation
bin10111100010100100…
…01001001110010111
31012121202121220211221
423301102021032113
5201340312000043
65450020111211
7625116141055
oct136122111627
935552556757
1012638000023
1153a5904520
122548535507
1312653a682c
1487c6571d5
154de7978ed
hex2f1489397

12638000023 has 8 divisors (see below), whose sum is σ = 14123175696. Its totient is φ = 11208868800.

The previous prime is 12638000021. The next prime is 12638000027. The reversal of 12638000023 is 32000083621.

12638000023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12638000023 - 21 = 12638000021 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 (12638000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14010636 + ... + 14011537.

It is an arithmetic number, because the mean of its divisors is an integer number (1765396962).

Almost surely, 212638000023 is an apocalyptic number.

12638000023 is a deficient number, since it is larger than the sum of its proper divisors (1485175673).

12638000023 is a wasteful number, since it uses less digits than its factorization.

12638000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28022225.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12638000023 its reverse (32000083621), we get a palindrome (44638083644).

The spelling of 12638000023 in words is "twelve billion, six hundred thirty-eight million, twenty-three", and thus it is an aban number.

Divisors: 1 11 41 451 28022173 308243903 1148909093 12638000023