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13081302 = 2321355903
BaseRepresentation
bin110001111001…
…101011010110
3220121121011200
4301321223112
511322100202
61144213330
7216121623
oct61715326
926547150
1013081302
1174251a3
12446a246
132930220
141a4734a
151235e1c
hexc79ad6

13081302 has 24 divisors (see below), whose sum is σ = 30523584. Its totient is φ = 4024944.

The previous prime is 13081297. The next prime is 13081333. The reversal of 13081302 is 20318031.

It is a super-2 number, since 2×130813022 = 342240924030408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27718 + ... + 28185.

It is an arithmetic number, because the mean of its divisors is an integer number (1271816).

Almost surely, 213081302 is an apocalyptic number.

13081302 is an abundant number, since it is smaller than the sum of its proper divisors (17442282).

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

13081302 is a wasteful number, since it uses less digits than its factorization.

13081302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55924 (or 55921 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13081302 is about 3616.8082614371. The cubic root of 13081302 is about 235.6226253610.

Adding to 13081302 its reverse (20318031), we get a palindrome (33399333).

The spelling of 13081302 in words is "thirteen million, eighty-one thousand, three hundred two".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 55903 111806 167709 335418 503127 726739 1006254 1453478 2180217 4360434 6540651 13081302