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13388145 = 351914673
BaseRepresentation
bin110011000100…
…100101110001
3221012012002020
4303010211301
511411410040
61154542053
7221540331
oct63044561
927165066
1013388145
117614791
124597929
132a09aa4
141ac70c1
151296cd0
hexcc4971

13388145 has 16 divisors (see below), whose sum is σ = 21537792. Its totient is φ = 7101440.

The previous prime is 13388119. The next prime is 13388189. The reversal of 13388145 is 54188331.

It is not a de Polignac number, because 13388145 - 213 = 13379953 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 529 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (1346112).

Almost surely, 213388145 is an apocalyptic number.

13388145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13388145 is a deficient number, since it is larger than the sum of its proper divisors (8149647).

13388145 is a wasteful number, since it uses less digits than its factorization.

13388145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872.

The product of its digits is 11520, while the sum is 33.

The square root of 13388145 is about 3658.9814156402. The cubic root of 13388145 is about 237.4507081453.

The spelling of 13388145 in words is "thirteen million, three hundred eighty-eight thousand, one hundred forty-five".

Divisors: 1 3 5 15 191 573 955 2865 4673 14019 23365 70095 892543 2677629 4462715 13388145