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68102802 = 2331966377
BaseRepresentation
bin1000000111100…
…10101010010010
311202010222111000
410003302222102
5114413242202
610431402430
71454602305
oct403625222
9152128430
1068102802
1135495709
121a983416
1311156121
14908ab3c
155ea391c
hex40f2a92

68102802 has 32 divisors (see below), whose sum is σ = 159307200. Its totient is φ = 21505824.

The previous prime is 68102791. The next prime is 68102807. The reversal of 68102802 is 20820186.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (68102807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32163 + ... + 34214.

It is an arithmetic number, because the mean of its divisors is an integer number (4978350).

Almost surely, 268102802 is an apocalyptic number.

68102802 is an abundant number, since it is smaller than the sum of its proper divisors (91204398).

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

68102802 is a wasteful number, since it uses less digits than its factorization.

68102802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66407 (or 66401 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 68102802 is about 8252.4421839841. The cubic root of 68102802 is about 408.3710940321.

Adding to 68102802 its reverse (20820186), we get a palindrome (88922988).

The spelling of 68102802 in words is "sixty-eight million, one hundred two thousand, eight hundred two".

Divisors: 1 2 3 6 9 18 19 27 38 54 57 114 171 342 513 1026 66377 132754 199131 398262 597393 1194786 1261163 1792179 2522326 3584358 3783489 7566978 11350467 22700934 34051401 68102802