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13378026 = 235574003
BaseRepresentation
bin110011000010…
…000111101010
3221011200012110
4303002013222
511411044101
61154423150
7221465664
oct63020752
927150173
1013378026
117608122
124591ab6
132a052bc
141ac3534
151293cd6
hexcc21ea

13378026 has 16 divisors (see below), whose sum is σ = 26810784. Its totient is φ = 4450224.

The previous prime is 13378009. The next prime is 13378063. The reversal of 13378026 is 62087331.

It is a junction number, because it is equal to n+sod(n) for n = 13377984 and 13378002.

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 7 ways as a sum of consecutive naturals, for example, 1341 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (1675674).

Almost surely, 213378026 is an apocalyptic number.

13378026 is an abundant number, since it is smaller than the sum of its proper divisors (13432758).

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

13378026 is a wasteful number, since it uses less digits than its factorization.

13378026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13378026 is about 3657.5983923881. The cubic root of 13378026 is about 237.3908698999.

The spelling of 13378026 in words is "thirteen million, three hundred seventy-eight thousand, twenty-six".

Divisors: 1 2 3 6 557 1114 1671 3342 4003 8006 12009 24018 2229671 4459342 6689013 13378026