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13280338 = 2233167139
BaseRepresentation
bin110010101010…
…010001010010
3220222201012101
4302222101102
511344432323
61152351014
7220611121
oct62522122
926881171
1013280338
117550795
12454546a
13299c9b6
141a99ab8
151274dad
hexcaa452

13280338 has 32 divisors (see below), whose sum is σ = 21934080. Its totient is φ = 6011280.

The previous prime is 13280327. The next prime is 13280339. The reversal of 13280338 is 83308231.

It is not an unprimeable number, because it can be changed into a prime (13280339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95473 + ... + 95611.

It is an arithmetic number, because the mean of its divisors is an integer number (685440).

Almost surely, 213280338 is an apocalyptic number.

13280338 is a deficient number, since it is larger than the sum of its proper divisors (8653742).

13280338 is a wasteful number, since it uses less digits than its factorization.

13280338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 13280338 is about 3644.2198067625. The cubic root of 13280338 is about 236.8116385692.

Adding to 13280338 its reverse (83308231), we get a palindrome (96588569).

The spelling of 13280338 in words is "thirteen million, two hundred eighty thousand, three hundred thirty-eight".

Divisors: 1 2 23 31 46 62 67 134 139 278 713 1426 1541 2077 3082 3197 4154 4309 6394 8618 9313 18626 47771 95542 99107 198214 214199 288703 428398 577406 6640169 13280338