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13121454 = 232395083
BaseRepresentation
bin110010000011…
…011110101110
3220200122020210
4302003132232
511324341304
61145123250
7216346653
oct62033656
926618223
1013121454
117452385
124489526
132945598
141a57c2a
151242c89
hexc837ae

13121454 has 16 divisors (see below), whose sum is σ = 27384192. Its totient is φ = 4183608.

The previous prime is 13121453. The next prime is 13121473. The reversal of 13121454 is 45412131.

It is a self number, because there is not a number n which added to its sum of digits gives 13121454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121453) 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 7 ways as a sum of consecutive naturals, for example, 47404 + ... + 47679.

It is an arithmetic number, because the mean of its divisors is an integer number (1711512).

Almost surely, 213121454 is an apocalyptic number.

13121454 is an abundant number, since it is smaller than the sum of its proper divisors (14262738).

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

13121454 is a wasteful number, since it uses less digits than its factorization.

13121454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95111.

The product of its digits is 480, while the sum is 21.

The square root of 13121454 is about 3622.3547589931. The cubic root of 13121454 is about 235.8634540004.

Adding to 13121454 its reverse (45412131), we get a palindrome (58533585).

The spelling of 13121454 in words is "thirteen million, one hundred twenty-one thousand, four hundred fifty-four".

Divisors: 1 2 3 6 23 46 69 138 95083 190166 285249 570498 2186909 4373818 6560727 13121454