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12955338 = 23211591109
BaseRepresentation
bin110001011010…
…111011001010
3220101012101100
4301122323022
511304032323
61141402230
7215055444
oct61327312
926335340
1012955338
1173495a0
124409376
1328b7aa6
141a13494
15120d943
hexc5aeca

12955338 has 48 divisors (see below), whose sum is σ = 31168800. Its totient is φ = 3855840.

The previous prime is 12955333. The next prime is 12955351. The reversal of 12955338 is 83355921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955333) 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 23 ways as a sum of consecutive naturals, for example, 11128 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (649350).

Almost surely, 212955338 is an apocalyptic number.

12955338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12955338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15584400).

12955338 is an abundant number, since it is smaller than the sum of its proper divisors (18213462).

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

12955338 is a wasteful number, since it uses less digits than its factorization.

12955338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1184 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 12955338 is about 3599.3524417595. The cubic root of 12955338 is about 234.8638897945.

The spelling of 12955338 in words is "twelve million, nine hundred fifty-five thousand, three hundred thirty-eight".

Divisors: 1 2 3 6 9 11 18 22 33 59 66 99 118 177 198 354 531 649 1062 1109 1298 1947 2218 3327 3894 5841 6654 9981 11682 12199 19962 24398 36597 65431 73194 109791 130862 196293 219582 392586 588879 719741 1177758 1439482 2159223 4318446 6477669 12955338