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13121094 = 237312407
BaseRepresentation
bin110010000011…
…011001000110
3220200121202110
4302003121012
511324333334
61145121450
7216345630
oct62033106
926617673
1013121094
117452088
124489286
13294537c
141a57a50
151242ae9
hexc83646

13121094 has 16 divisors (see below), whose sum is σ = 29991168. Its totient is φ = 3748872.

The previous prime is 13121083. The next prime is 13121099. The reversal of 13121094 is 49012131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13121094.

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 7 ways as a sum of consecutive naturals, for example, 156162 + ... + 156245.

It is an arithmetic number, because the mean of its divisors is an integer number (1874448).

Almost surely, 213121094 is an apocalyptic number.

13121094 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13121094 is an abundant number, since it is smaller than the sum of its proper divisors (16870074).

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

13121094 is a wasteful number, since it uses less digits than its factorization.

13121094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312419.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 13121094 is about 3622.3050672189. The cubic root of 13121094 is about 235.8612969320.

The spelling of 13121094 in words is "thirteen million, one hundred twenty-one thousand, ninety-four".

Divisors: 1 2 3 6 7 14 21 42 312407 624814 937221 1874442 2186849 4373698 6560547 13121094