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68387088 = 24371118503
BaseRepresentation
bin1000001001110…
…00000100010000
311202200102110010
410010320010100
5120001341323
610441434520
71460165160
oct404700420
9152612403
1068387088
113566a260
121aa9ba40
1311225643
1491225a0
15600cc93
hex4138110

68387088 has 80 divisors (see below), whose sum is σ = 220271616. Its totient is φ = 17761920.

The previous prime is 68387083. The next prime is 68387093. The reversal of 68387088 is 88078386.

It is an interprime number because it is at equal distance from previous prime (68387083) and next prime (68387093).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (68387083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5556 + ... + 12947.

Almost surely, 268387088 is an apocalyptic number.

It is an amenable number.

68387088 is an abundant number, since it is smaller than the sum of its proper divisors (151884528).

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

68387088 is a wasteful number, since it uses less digits than its factorization.

68387088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18532 (or 18526 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 68387088 is about 8269.6486019661. The cubic root of 68387088 is about 408.9385352884.

The spelling of 68387088 in words is "sixty-eight million, three hundred eighty-seven thousand, eighty-eight".

Divisors: 1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 33 42 44 48 56 66 77 84 88 112 132 154 168 176 231 264 308 336 462 528 616 924 1232 1848 3696 18503 37006 55509 74012 111018 129521 148024 203533 222036 259042 296048 388563 407066 444072 518084 610599 777126 814132 888144 1036168 1221198 1424731 1554252 1628264 2072336 2442396 2849462 3108504 3256528 4274193 4884792 5698924 6217008 8548386 9769584 11397848 17096772 22795696 34193544 68387088