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13438068 = 2237159977
BaseRepresentation
bin110011010000…
…110001110100
3221021201120020
4303100301310
511420004233
61200005140
7222136020
oct63206164
927251506
1013438068
117649246
1246007b0
132a26727
141adb380
1512a69b3
hexcd0c74

13438068 has 24 divisors (see below), whose sum is σ = 35835072. Its totient is φ = 3839424.

The previous prime is 13438063. The next prime is 13438069. The reversal of 13438068 is 86083431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438063) 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 7 ways as a sum of consecutive naturals, for example, 79905 + ... + 80072.

It is an arithmetic number, because the mean of its divisors is an integer number (1493128).

Almost surely, 213438068 is an apocalyptic number.

It is an amenable number.

13438068 is an abundant number, since it is smaller than the sum of its proper divisors (22397004).

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

13438068 is a wasteful number, since it uses less digits than its factorization.

13438068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159991 (or 159989 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 13438068 is about 3665.7970483921. The cubic root of 13438068 is about 237.7454850475.

The spelling of 13438068 in words is "thirteen million, four hundred thirty-eight thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 159977 319954 479931 639908 959862 1119839 1919724 2239678 3359517 4479356 6719034 13438068