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68318088 = 23318115727
BaseRepresentation
bin1000001001001…
…11001110001000
311202112220210120
410010213032020
5114442134323
610440143240
71456460046
oct404471610
9152486716
1068318088
1135622433
121aa67b20
1311200107
149105396
155ee75e3
hex4127388

68318088 has 32 divisors (see below), whose sum is σ = 171749760. Its totient is φ = 22645440.

The previous prime is 68318071. The next prime is 68318111. The reversal of 68318088 is 88081386.

It is a happy number.

It is a super-2 number, since 2×683180882 = 9334722295951488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3520 + ... + 12207.

It is an arithmetic number, because the mean of its divisors is an integer number (5367180).

Almost surely, 268318088 is an apocalyptic number.

It is an amenable number.

68318088 is an abundant number, since it is smaller than the sum of its proper divisors (103431672).

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

68318088 is a wasteful number, since it uses less digits than its factorization.

68318088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15917 (or 15913 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 68318088 is about 8265.4756668930. The cubic root of 68318088 is about 408.8009544723.

The spelling of 68318088 in words is "sixty-eight million, three hundred eighteen thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 181 362 543 724 1086 1448 2172 4344 15727 31454 47181 62908 94362 125816 188724 377448 2846587 5693174 8539761 11386348 17079522 22772696 34159044 68318088