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12955128 = 233539797
BaseRepresentation
bin110001011010…
…110111111000
3220101012002120
4301122313320
511304031003
61141401240
7215055024
oct61326770
926335076
1012955128
11734941a
124409220
1328b7974
141a13384
15120d853
hexc5adf8

12955128 has 16 divisors (see below), whose sum is σ = 32387880. Its totient is φ = 4318368.

The previous prime is 12955123. The next prime is 12955133. The reversal of 12955128 is 82155921.

It is an interprime number because it is at equal distance from previous prime (12955123) and next prime (12955133).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955121) 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, 269875 + ... + 269922.

Almost surely, 212955128 is an apocalyptic number.

It is an amenable number.

12955128 is an abundant number, since it is smaller than the sum of its proper divisors (19432752).

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

12955128 is a wasteful number, since it uses less digits than its factorization.

12955128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539806 (or 539802 counting only the distinct ones).

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

The square root of 12955128 is about 3599.3232697272. The cubic root of 12955128 is about 234.8626207762.

The spelling of 12955128 in words is "twelve million, nine hundred fifty-five thousand, one hundred twenty-eight".

Divisors: 1 2 3 4 6 8 12 24 539797 1079594 1619391 2159188 3238782 4318376 6477564 12955128