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13440195 = 335293433
BaseRepresentation
bin110011010001…
…010011000011
3221021211111000
4303101103003
511420041240
61200023043
7222145146
oct63212303
927254430
1013440195
11764a8aa
124601a83
132a276a2
141adc05d
1512a7430
hexcd14c3

13440195 has 32 divisors (see below), whose sum is σ = 24724800. Its totient is φ = 6918912.

The previous prime is 13440187. The next prime is 13440199. The reversal of 13440195 is 59104431.

It is not a de Polignac number, because 13440195 - 23 = 13440187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13440199) 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 31 ways as a sum of consecutive naturals, for example, 2199 + ... + 5631.

It is an arithmetic number, because the mean of its divisors is an integer number (772650).

Almost surely, 213440195 is an apocalyptic number.

13440195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13440195 is a deficient number, since it is larger than the sum of its proper divisors (11284605).

13440195 is a wasteful number, since it uses less digits than its factorization.

13440195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476 (or 3470 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13440195 is about 3666.0871511736. The cubic root of 13440195 is about 237.7580279708.

The spelling of 13440195 in words is "thirteen million, four hundred forty thousand, one hundred ninety-five".

Divisors: 1 3 5 9 15 27 29 45 87 135 145 261 435 783 1305 3433 3915 10299 17165 30897 51495 92691 99557 154485 298671 463455 497785 896013 1493355 2688039 4480065 13440195