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12973188 = 2231081099
BaseRepresentation
bin110001011111…
…010010000100
3220102002212110
4301133102010
511310120223
61142021020
7215161464
oct61372204
926362773
1012973188
117360a48
124417770
1328c2c57
141a19ba4
151213d93
hexc5f484

12973188 has 12 divisors (see below), whose sum is σ = 30270800. Its totient is φ = 4324392.

The previous prime is 12973187. The next prime is 12973201. The reversal of 12973188 is 88137921.

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

It is not an unprimeable number, because it can be changed into a prime (12973187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540538 + ... + 540561.

Almost surely, 212973188 is an apocalyptic number.

It is an amenable number.

12973188 is an abundant number, since it is smaller than the sum of its proper divisors (17297612).

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

12973188 is a wasteful number, since it uses less digits than its factorization.

12973188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081106 (or 1081104 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 12973188 is about 3601.8312009310. The cubic root of 12973188 is about 234.9717062662.

The spelling of 12973188 in words is "twelve million, nine hundred seventy-three thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1081099 2162198 3243297 4324396 6486594 12973188