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13009338 = 2321938039
BaseRepresentation
bin110001101000…
…000110111010
3220110221110100
4301220012322
511312244323
61142500230
7215402046
oct61500672
926427410
1013009338
117386121
124434676
132906544
141a29026
15121e943
hexc681ba

13009338 has 24 divisors (see below), whose sum is σ = 29671200. Its totient is φ = 4108104.

The previous prime is 13009333. The next prime is 13009343. The reversal of 13009338 is 83390031.

It is an interprime number because it is at equal distance from previous prime (13009333) and next prime (13009343).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13009331) 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, 18678 + ... + 19361.

It is an arithmetic number, because the mean of its divisors is an integer number (1236300).

Almost surely, 213009338 is an apocalyptic number.

13009338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13009338 is an abundant number, since it is smaller than the sum of its proper divisors (16661862).

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

13009338 is a wasteful number, since it uses less digits than its factorization.

13009338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38066 (or 38063 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13009338 is about 3606.8459906129. The cubic root of 13009338 is about 235.1897546905.

Adding to 13009338 its reverse (83390031), we get a palindrome (96399369).

The spelling of 13009338 in words is "thirteen million, nine thousand, three hundred thirty-eight".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 38039 76078 114117 228234 342351 684702 722741 1445482 2168223 4336446 6504669 13009338