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68808310 = 2519536833
BaseRepresentation
bin1000001100111…
…10111001110110
311210110211020221
410012132321312
5120103331220
610454444554
71463601214
oct406367166
9153424227
1068808310
113592777a
121b06375a
131134229c
1491d1cb4
1560929aa
hex419ee76

68808310 has 32 divisors (see below), whose sum is σ = 132852960. Its totient is φ = 25579008.

The previous prime is 68808307. The next prime is 68808319. The reversal of 68808310 is 1380886.

It is a super-2 number, since 2×688083102 = 9469167050112200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68808319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6654 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (4151655).

Almost surely, 268808310 is an apocalyptic number.

68808310 is a deficient number, since it is larger than the sum of its proper divisors (64044650).

68808310 is a wasteful number, since it uses less digits than its factorization.

68808310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 68808310 is about 8295.0774559373. The cubic root of 68808310 is about 409.7764198410.

The spelling of 68808310 in words is "sixty-eight million, eight hundred eight thousand, three hundred ten".

Divisors: 1 2 5 10 19 38 53 95 106 190 265 530 1007 2014 5035 6833 10070 13666 34165 68330 129827 259654 362149 649135 724298 1298270 1810745 3621490 6880831 13761662 34404155 68808310