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68869488 = 2434361547
BaseRepresentation
bin1000001101011…
…01110101110000
311210120221011210
410012231311300
5120112310423
610500040120
71464244452
oct406556560
9153527153
1068869488
1135969736
121b093040
131136409c
14920a2d2
1560a5b93
hex41add70

68869488 has 80 divisors (see below), whose sum is σ = 185373056. Its totient is φ = 22014720.

The previous prime is 68869487. The next prime is 68869511. The reversal of 68869488 is 88496886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68869481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125631 + ... + 126177.

Almost surely, 268869488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68869488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92686528).

68869488 is an abundant number, since it is smaller than the sum of its proper divisors (116503568).

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

68869488 is a wasteful number, since it uses less digits than its factorization.

68869488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 656 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 57.

The square root of 68869488 is about 8298.7642453561. The cubic root of 68869488 is about 409.8978289931.

The spelling of 68869488 in words is "sixty-eight million, eight hundred sixty-nine thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 43 48 61 86 122 129 172 183 244 258 344 366 488 516 547 688 732 976 1032 1094 1464 1641 2064 2188 2623 2928 3282 4376 5246 6564 7869 8752 10492 13128 15738 20984 23521 26256 31476 33367 41968 47042 62952 66734 70563 94084 100101 125904 133468 141126 188168 200202 266936 282252 376336 400404 533872 564504 800808 1129008 1434781 1601616 2869562 4304343 5739124 8608686 11478248 17217372 22956496 34434744 68869488