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13235412 = 2231102951
BaseRepresentation
bin110010011111…
…010011010100
3220220102120110
4302133103110
511342013122
61151403020
7220333131
oct62372324
926812513
1013235412
11751aa63
124523470
132985408
141a87588
15126690c
hexc9f4d4

13235412 has 12 divisors (see below), whose sum is σ = 30882656. Its totient is φ = 4411800.

The previous prime is 13235399. The next prime is 13235447. The reversal of 13235412 is 21453231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×132354122 = 350352261619488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 551464 + ... + 551487.

Almost surely, 213235412 is an apocalyptic number.

13235412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13235412 is an abundant number, since it is smaller than the sum of its proper divisors (17647244).

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

13235412 is a wasteful number, since it uses less digits than its factorization.

13235412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102958 (or 1102956 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 13235412 is about 3638.0505768887. The cubic root of 13235412 is about 236.5443005153.

Adding to 13235412 its reverse (21453231), we get a palindrome (34688643).

The spelling of 13235412 in words is "thirteen million, two hundred thirty-five thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 1102951 2205902 3308853 4411804 6617706 13235412