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13188948 = 2231099079
BaseRepresentation
bin110010010011…
…111101010100
3220211001211120
4302103331110
511334021243
61150403540
7220050513
oct62237524
926731746
1013188948
117499063
1245005b0
13296a216
141a7467a
151257c83
hexc93f54

13188948 has 12 divisors (see below), whose sum is σ = 30774240. Its totient is φ = 4396312.

The previous prime is 13188947. The next prime is 13188961. The reversal of 13188948 is 84988131.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13188941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549528 + ... + 549551.

It is an arithmetic number, because the mean of its divisors is an integer number (2564520).

Almost surely, 213188948 is an apocalyptic number.

It is an amenable number.

13188948 is an abundant number, since it is smaller than the sum of its proper divisors (17585292).

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

13188948 is a wasteful number, since it uses less digits than its factorization.

13188948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099086 (or 1099084 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 13188948 is about 3631.6591249730. The cubic root of 13188948 is about 236.2671732428.

The spelling of 13188948 in words is "thirteen million, one hundred eighty-eight thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 1099079 2198158 3297237 4396316 6594474 13188948