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12513212 = 2231100913
BaseRepresentation
bin101111101110…
…111110111100
3212112201220022
4233232332330
511200410322
61124111312
7211234445
oct57567674
925481808
1012513212
1170773a8
124235538
13279178a
14193a2cc
151172942
hexbeefbc

12513212 has 12 divisors (see below), whose sum is σ = 22604736. Its totient is φ = 6054720.

The previous prime is 12513209. The next prime is 12513227. The reversal of 12513212 is 21231521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50333 + ... + 50580.

It is an arithmetic number, because the mean of its divisors is an integer number (1883728).

Almost surely, 212513212 is an apocalyptic number.

It is an amenable number.

12513212 is a deficient number, since it is larger than the sum of its proper divisors (10091524).

12513212 is a wasteful number, since it uses less digits than its factorization.

12513212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100948 (or 100946 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 12513212 is about 3537.4018714305. The cubic root of 12513212 is about 232.1611791186.

Adding to 12513212 its reverse (21231521), we get a palindrome (33744733).

The spelling of 12513212 in words is "twelve million, five hundred thirteen thousand, two hundred twelve".

Divisors: 1 2 4 31 62 124 100913 201826 403652 3128303 6256606 12513212