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68013310 = 2553128327
BaseRepresentation
bin1000000110111…
…00110011111110
311201222102201111
410003130303332
5114402411220
610425432234
71454050351
oct403346376
9151872644
1068013310
1135434452
121a93b67a
1311124481
149066298
155e8715a
hex40dccfe

68013310 has 16 divisors (see below), whose sum is σ = 124734816. Its totient is φ = 26691808.

The previous prime is 68013263. The next prime is 68013313. The reversal of 68013310 is 1331086.

It is a super-2 number, since 2×680133102 = 9251620674312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68013313) 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, 63634 + ... + 64693.

It is an arithmetic number, because the mean of its divisors is an integer number (7795926).

Almost surely, 268013310 is an apocalyptic number.

68013310 is a deficient number, since it is larger than the sum of its proper divisors (56721506).

68013310 is a wasteful number, since it uses less digits than its factorization.

68013310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128387.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 68013310 is about 8247.0182490401. The cubic root of 68013310 is about 408.1921392531.

Adding to 68013310 its reverse (1331086), we get a palindrome (69344396).

The spelling of 68013310 in words is "sixty-eight million, thirteen thousand, three hundred ten".

Divisors: 1 2 5 10 53 106 265 530 128327 256654 641635 1283270 6801331 13602662 34006655 68013310