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68293950 = 23521094177
BaseRepresentation
bin1000001001000…
…01010100111110
311202111200200120
410010201110332
5114440401300
610435435410
71456326504
oct404412476
9152450616
1068293950
113560628a
121aa55b66
13111c212a
1490da674
155ee03a0
hex412153e

68293950 has 48 divisors (see below), whose sum is σ = 170963760. Its totient is φ = 18040320.

The previous prime is 68293949. The next prime is 68293963. The reversal of 68293950 is 5939286.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 14262 + ... + 18438.

It is an arithmetic number, because the mean of its divisors is an integer number (3561745).

Almost surely, 268293950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68293950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85481880).

68293950 is an abundant number, since it is smaller than the sum of its proper divisors (102669810).

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

68293950 is a wasteful number, since it uses less digits than its factorization.

68293950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301 (or 4296 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 68293950 is about 8264.0153678463. The cubic root of 68293950 is about 408.7528032428.

The spelling of 68293950 in words is "sixty-eight million, two hundred ninety-three thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 109 150 218 327 545 654 1090 1635 2725 3270 4177 5450 8175 8354 12531 16350 20885 25062 41770 62655 104425 125310 208850 313275 455293 626550 910586 1365879 2276465 2731758 4552930 6829395 11382325 13658790 22764650 34146975 68293950