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13091148 = 2232751949
BaseRepresentation
bin110001111100…
…000101001100
3220122002200100
4301330011030
511322404043
61144331100
7216162420
oct61740514
926562610
1013091148
117431634
124473a90
132934855
141a4ab80
151238cd3
hexc7c14c

13091148 has 36 divisors (see below), whose sum is σ = 37819600. Its totient is φ = 3740256.

The previous prime is 13091147. The next prime is 13091153. The reversal of 13091148 is 84119031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (13091147) 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, 25723 + ... + 26226.

Almost surely, 213091148 is an apocalyptic number.

13091148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13091148 is an abundant number, since it is smaller than the sum of its proper divisors (24728452).

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

13091148 is a wasteful number, since it uses less digits than its factorization.

13091148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51966 (or 51961 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 13091148 is about 3618.1691502748. The cubic root of 13091148 is about 235.6817264749.

The spelling of 13091148 in words is "thirteen million, ninety-one thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 51949 103898 155847 207796 311694 363643 467541 623388 727286 935082 1090929 1454572 1870164 2181858 3272787 4363716 6545574 13091148