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68448760 = 2357921661
BaseRepresentation
bin1000001010001…
…11000111111000
311202210120001021
410011013013320
5120010330020
610443032224
71460543032
oct405070770
9152716037
1068448760
1135701626
121ab0b674
1311247733
14913ac52
1560211aa
hex41471f8

68448760 has 32 divisors (see below), whose sum is σ = 155966400. Its totient is φ = 27031680.

The previous prime is 68448739. The next prime is 68448763. The reversal of 68448760 is 6784486.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68448763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7671 + ... + 13990.

It is an arithmetic number, because the mean of its divisors is an integer number (4873950).

Almost surely, 268448760 is an apocalyptic number.

It is an amenable number.

68448760 is an abundant number, since it is smaller than the sum of its proper divisors (87517640).

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

68448760 is a wasteful number, since it uses less digits than its factorization.

68448760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21751 (or 21747 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 68448760 is about 8273.3765779155. The cubic root of 68448760 is about 409.0614263227.

The spelling of 68448760 in words is "sixty-eight million, four hundred forty-eight thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 79 158 316 395 632 790 1580 3160 21661 43322 86644 108305 173288 216610 433220 866440 1711219 3422438 6844876 8556095 13689752 17112190 34224380 68448760