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68009108 = 2237459521
BaseRepresentation
bin1000000110110…
…11110010010100
311201222012221212
410003123302110
5114402242413
610425400552
71454032166
oct403336224
9151865855
1068009108
1135431282
121a939158
131112259b
149064936
155e85ca8
hex40dbc94

68009108 has 12 divisors (see below), whose sum is σ = 122232852. Its totient is φ = 33085440.

The previous prime is 68009099. The next prime is 68009111. The reversal of 68009108 is 80190086.

It can be written as a sum of positive squares in 2 ways, for example, as 31382404 + 36626704 = 5602^2 + 6052^2 .

It is a plaindrome in base 13.

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, 229613 + ... + 229908.

It is an arithmetic number, because the mean of its divisors is an integer number (10186071).

Almost surely, 268009108 is an apocalyptic number.

It is an amenable number.

68009108 is a deficient number, since it is larger than the sum of its proper divisors (54223744).

68009108 is a wasteful number, since it uses less digits than its factorization.

68009108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459562 (or 459560 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 68009108 is about 8246.7634863624. The cubic root of 68009108 is about 408.1837327677.

The spelling of 68009108 in words is "sixty-eight million, nine thousand, one hundred eight".

Divisors: 1 2 4 37 74 148 459521 919042 1838084 17002277 34004554 68009108