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13120212 = 2237236791
BaseRepresentation
bin110010000011…
…001011010100
3220200120112210
4302003023110
511324321322
61145113420
7216343230
oct62031324
926616483
1013120212
117451456
124488870
132944b51
141a575c0
15124270c
hexc832d4

13120212 has 48 divisors (see below), whose sum is σ = 36513792. Its totient is φ = 3585120.

The previous prime is 13120201. The next prime is 13120213. The reversal of 13120212 is 21202131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (760704).

Almost surely, 213120212 is an apocalyptic number.

13120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13120212 is an abundant number, since it is smaller than the sum of its proper divisors (23393580).

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

13120212 is a wasteful number, since it uses less digits than its factorization.

13120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828 (or 6826 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13120212 is about 3622.1833194912. The cubic root of 13120212 is about 235.8560119478.

Adding to 13120212 its reverse (21202131), we get a palindrome (34322343).

It can be divided in two parts, 1 and 3120212, that added together give a palindrome (3120213).

The spelling of 13120212 in words is "thirteen million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 23 28 42 46 69 84 92 138 161 276 322 483 644 966 1932 6791 13582 20373 27164 40746 47537 81492 95074 142611 156193 190148 285222 312386 468579 570444 624772 937158 1093351 1874316 2186702 3280053 4373404 6560106 13120212