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68239950 = 23521632791
BaseRepresentation
bin1000001000101…
…00001001001110
311202101221121120
410010110021032
5114432134300
610434341410
71456013202
oct404241116
9152357546
1068239950
1135579759
121aa2a866
13111a368c
1490c4b02
155ece3a0
hex411424e

68239950 has 48 divisors (see below), whose sum is σ = 170334336. Its totient is φ = 18079200.

The previous prime is 68239903. The next prime is 68239961. The reversal of 68239950 is 5993286.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23055 + ... + 25845.

It is an arithmetic number, because the mean of its divisors is an integer number (3548632).

Almost surely, 268239950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68239950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85167168).

68239950 is an abundant number, since it is smaller than the sum of its proper divisors (102094386).

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

68239950 is a wasteful number, since it uses less digits than its factorization.

68239950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2964 counting only the distinct ones).

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

The square root of 68239950 is about 8260.7475448654. The cubic root of 68239950 is about 408.6450412739.

The spelling of 68239950 in words is "sixty-eight million, two hundred thirty-nine thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 163 326 489 815 978 1630 2445 2791 4075 4890 5582 8150 8373 12225 13955 16746 24450 27910 41865 69775 83730 139550 209325 418650 454933 909866 1364799 2274665 2729598 4549330 6823995 11373325 13647990 22746650 34119975 68239950