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13289913 = 35713601
BaseRepresentation
bin110010101100…
…100110111001
3221000012100000
4302230212321
511400234123
61152503213
7220651050
oct62544671
927005300
1013289913
1175579aa
12454ab09
1329a4170
141a9d397
151277b43
hexcac9b9

13289913 has 48 divisors (see below), whose sum is σ = 24542336. Its totient is φ = 6998400.

The previous prime is 13289839. The next prime is 13289923. The reversal of 13289913 is 31998231.

It is not a de Polignac number, because 13289913 - 210 = 13288889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13289923) 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 47 ways as a sum of consecutive naturals, for example, 21813 + ... + 22413.

Almost surely, 213289913 is an apocalyptic number.

13289913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13289913 is a deficient number, since it is larger than the sum of its proper divisors (11252423).

13289913 is an equidigital number, since it uses as much as digits as its factorization.

13289913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 624 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 13289913 is about 3645.5332943206. The cubic root of 13289913 is about 236.8685378920.

The spelling of 13289913 in words is "thirteen million, two hundred eighty-nine thousand, nine hundred thirteen".

Divisors: 1 3 7 9 13 21 27 39 63 81 91 117 189 243 273 351 567 601 819 1053 1701 1803 2457 3159 4207 5409 7371 7813 12621 16227 22113 23439 37863 48681 54691 70317 113589 146043 164073 210951 340767 492219 632853 1022301 1476657 1898559 4429971 13289913