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68210300 = 2252769887
BaseRepresentation
bin1000001000011…
…00111001111100
311202100102221102
410010030321330
5114430212200
610433552232
71455530564
oct404147174
9152312842
1068210300
1135559454
121aa15678
1311193032
1490b7da4
155ec56d5
hex410ce7c

68210300 has 36 divisors (see below), whose sum is σ = 148375920. Its totient is φ = 27217920.

The previous prime is 68210299. The next prime is 68210309. The reversal of 68210300 is 301286.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68210309) 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, 76457 + ... + 77343.

Almost surely, 268210300 is an apocalyptic number.

It is an amenable number.

68210300 is an abundant number, since it is smaller than the sum of its proper divisors (80165620).

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

68210300 is a wasteful number, since it uses less digits than its factorization.

68210300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 68210300 is about 8258.9527181114. The cubic root of 68210300 is about 408.5858477920.

Adding to 68210300 its reverse (301286), we get a palindrome (68511586).

The spelling of 68210300 in words is "sixty-eight million, two hundred ten thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 769 887 1538 1774 3076 3548 3845 4435 7690 8870 15380 17740 19225 22175 38450 44350 76900 88700 682103 1364206 2728412 3410515 6821030 13642060 17052575 34105150 68210300