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13121092 = 228936857
BaseRepresentation
bin110010000011…
…011001000100
3220200121202101
4302003121010
511324333332
61145121444
7216345625
oct62033104
926617671
1013121092
117452086
124489284
13294537a
141a57a4c
151242ae7
hexc83644

13121092 has 12 divisors (see below), whose sum is σ = 23220540. Its totient is φ = 6486656.

The previous prime is 13121083. The next prime is 13121099. The reversal of 13121092 is 29012131.

It can be written as a sum of positive squares in 2 ways, for example, as 5089536 + 8031556 = 2256^2 + 2834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18073 + ... + 18784.

It is an arithmetic number, because the mean of its divisors is an integer number (1935045).

Almost surely, 213121092 is an apocalyptic number.

It is an amenable number.

13121092 is a deficient number, since it is larger than the sum of its proper divisors (10099448).

13121092 is a wasteful number, since it uses less digits than its factorization.

13121092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36950 (or 36948 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 13121092 is about 3622.3047911516. The cubic root of 13121092 is about 235.8612849482.

The spelling of 13121092 in words is "thirteen million, one hundred twenty-one thousand, ninety-two".

Divisors: 1 2 4 89 178 356 36857 73714 147428 3280273 6560546 13121092