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13280022 = 2327105397
BaseRepresentation
bin110010101010…
…001100010110
3220222200202200
4302222030112
511344430042
61152345330
7220610160
oct62521426
926880680
1013280022
117550528
124545246
13299c802
141a99930
151274c4c
hexcaa316

13280022 has 24 divisors (see below), whose sum is σ = 32884176. Its totient is φ = 3794256.

The previous prime is 13280021. The next prime is 13280041. The reversal of 13280022 is 22008231.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13279977 and 13280004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280021) 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 11 ways as a sum of consecutive naturals, for example, 52573 + ... + 52824.

It is an arithmetic number, because the mean of its divisors is an integer number (1370174).

Almost surely, 213280022 is an apocalyptic number.

13280022 is an abundant number, since it is smaller than the sum of its proper divisors (19604154).

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

13280022 is a wasteful number, since it uses less digits than its factorization.

13280022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105412 (or 105409 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 13280022 is about 3644.1764501736. The cubic root of 13280022 is about 236.8097602769.

Adding to 13280022 its reverse (22008231), we get a palindrome (35288253).

The spelling of 13280022 in words is "thirteen million, two hundred eighty thousand, twenty-two".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 105397 210794 316191 632382 737779 948573 1475558 1897146 2213337 4426674 6640011 13280022