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12819128 = 237228913
BaseRepresentation
bin110000111001…
…101010111000
3220010021112112
4300321222320
511240203003
61134431452
7213650360
oct60715270
926107475
1012819128
117266223
124362588
13286aaaa
1419b99a0
1511d33d8
hexc39ab8

12819128 has 16 divisors (see below), whose sum is σ = 27469680. Its totient is φ = 5493888.

The previous prime is 12819083. The next prime is 12819137. The reversal of 12819128 is 82191821.

12819128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12819094 and 12819103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114401 + ... + 114512.

It is an arithmetic number, because the mean of its divisors is an integer number (1716855).

Almost surely, 212819128 is an apocalyptic number.

It is an amenable number.

12819128 is an abundant number, since it is smaller than the sum of its proper divisors (14650552).

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

12819128 is a wasteful number, since it uses less digits than its factorization.

12819128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228926 (or 228922 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 12819128 is about 3580.3809853143. The cubic root of 12819128 is about 234.0378831695.

The spelling of 12819128 in words is "twelve million, eight hundred nineteen thousand, one hundred twenty-eight".

Divisors: 1 2 4 7 8 14 28 56 228913 457826 915652 1602391 1831304 3204782 6409564 12819128