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68254648 = 23721121439
BaseRepresentation
bin1000001000101…
…11101110111000
311202102200202221
410010113232320
5114433122043
610434533424
71456104100
oct404275670
9152380687
1068254648
1135589800
121aa37274
13111aa287
1490ca200
155ed38ed
hex4117bb8

68254648 has 72 divisors (see below), whose sum is σ = 163749600. Its totient is φ = 26574240.

The previous prime is 68254621. The next prime is 68254649. The reversal of 68254648 is 84645286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68254649) 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 17 ways as a sum of consecutive naturals, for example, 46713 + ... + 48151.

It is an arithmetic number, because the mean of its divisors is an integer number (2274300).

Almost surely, 268254648 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 68254648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81874800).

68254648 is an abundant number, since it is smaller than the sum of its proper divisors (95494952).

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

68254648 is a wasteful number, since it uses less digits than its factorization.

68254648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1459 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The square root of 68254648 is about 8261.6371258970. The cubic root of 68254648 is about 408.6743781147.

The spelling of 68254648 in words is "sixty-eight million, two hundred fifty-four thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 11 14 22 28 44 49 56 77 88 98 121 154 196 242 308 392 484 539 616 847 968 1078 1439 1694 2156 2878 3388 4312 5756 5929 6776 10073 11512 11858 15829 20146 23716 31658 40292 47432 63316 70511 80584 110803 126632 141022 174119 221606 282044 348238 443212 564088 696476 775621 886424 1218833 1392952 1551242 2437666 3102484 4875332 6204968 8531831 9750664 17063662 34127324 68254648