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68009112 = 23331718521
BaseRepresentation
bin1000000110110…
…11110010011000
311201222012222000
410003123302120
5114402242422
610425401000
71454032203
oct403336230
9151865860
1068009112
1135431286
121a939160
13111225a2
14906493a
155e85cac
hex40dbc98

68009112 has 64 divisors (see below), whose sum is σ = 200037600. Its totient is φ = 21335040.

The previous prime is 68009111. The next prime is 68009131. The reversal of 68009112 is 21190086.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68009111) 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, 5589 + ... + 12932.

Almost surely, 268009112 is an apocalyptic number.

It is an amenable number.

68009112 is an abundant number, since it is smaller than the sum of its proper divisors (132028488).

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

68009112 is a wasteful number, since it uses less digits than its factorization.

68009112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18553 (or 18543 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 68009112 is about 8246.7637288818. The cubic root of 68009112 is about 408.1837407702.

Adding to 68009112 its reverse (21190086), we get a palindrome (89199198).

It can be divided in two parts, 68009 and 112, that added together give a square (68121 = 2612).

The spelling of 68009112 in words is "sixty-eight million, nine thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 27 34 36 51 54 68 72 102 108 136 153 204 216 306 408 459 612 918 1224 1836 3672 18521 37042 55563 74084 111126 148168 166689 222252 314857 333378 444504 500067 629714 666756 944571 1000134 1259428 1333512 1889142 2000268 2518856 2833713 3778284 4000536 5667426 7556568 8501139 11334852 17002278 22669704 34004556 68009112