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13203012 = 2232347837
BaseRepresentation
bin110010010111…
…011001000100
3220211210010110
4302113121010
511334444022
61150553020
7220136514
oct62273104
926753113
1013203012
1174a8689
124508770
132973744
141a79844
15125c00c
hexc97644

13203012 has 24 divisors (see below), whose sum is σ = 32147136. Its totient is φ = 4209568.

The previous prime is 13203011. The next prime is 13203013. The reversal of 13203012 is 21030231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13203011) and next prime (13203013).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13203011) 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 7 ways as a sum of consecutive naturals, for example, 23643 + ... + 24194.

It is an arithmetic number, because the mean of its divisors is an integer number (1339464).

Almost surely, 213203012 is an apocalyptic number.

13203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13203012 is an abundant number, since it is smaller than the sum of its proper divisors (18944124).

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

13203012 is a wasteful number, since it uses less digits than its factorization.

13203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47867 (or 47865 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13203012 is about 3633.5949141312. The cubic root of 13203012 is about 236.3511243691.

Adding to 13203012 its reverse (21030231), we get a palindrome (34233243).

The spelling of 13203012 in words is "thirteen million, two hundred three thousand, twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 47837 95674 143511 191348 287022 574044 1100251 2200502 3300753 4401004 6601506 13203012