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68129496 = 23322341141
BaseRepresentation
bin1000000111110…
…01001011011000
311202012100002200
410003321023120
5114420120441
610432130200
71455043161
oct403711330
9152170080
1068129496
1135503776
121a996960
1311165316
149096768
155eab7b6
hex40f92d8

68129496 has 48 divisors (see below), whose sum is σ = 192544560. Its totient is φ = 21721920.

The previous prime is 68129491. The next prime is 68129527. The reversal of 68129496 is 69492186.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68129491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18915 + ... + 22226.

It is an arithmetic number, because the mean of its divisors is an integer number (4011345).

Almost surely, 268129496 is an apocalyptic number.

It is an amenable number.

68129496 is an abundant number, since it is smaller than the sum of its proper divisors (124415064).

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

68129496 is a wasteful number, since it uses less digits than its factorization.

68129496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41176 (or 41169 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 68129496 is about 8254.0593649428. The cubic root of 68129496 is about 408.4244429580.

The spelling of 68129496 in words is "sixty-eight million, one hundred twenty-nine thousand, four hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 18 23 24 36 46 69 72 92 138 184 207 276 414 552 828 1656 41141 82282 123423 164564 246846 329128 370269 493692 740538 946243 987384 1481076 1892486 2838729 2962152 3784972 5677458 7569944 8516187 11354916 17032374 22709832 34064748 68129496