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68195930 = 25113311873
BaseRepresentation
bin1000001000010…
…01011001011010
311202022201020012
410010021121122
5114424232210
610433401522
71455440645
oct404113132
9152281205
1068195930
1135549680
121aa092a2
131118962a
1490b2a5c
155ec1305
hex410965a

68195930 has 32 divisors (see below), whose sum is σ = 134388288. Its totient is φ = 24710400.

The previous prime is 68195927. The next prime is 68195951. The reversal of 68195930 is 3959186.

It is a super-3 number, since 3×681959303 (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35474 + ... + 37346.

It is an arithmetic number, because the mean of its divisors is an integer number (4199634).

Almost surely, 268195930 is an apocalyptic number.

68195930 is a deficient number, since it is larger than the sum of its proper divisors (66192358).

68195930 is a wasteful number, since it uses less digits than its factorization.

68195930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 68195930 is about 8258.0827072632. The cubic root of 68195930 is about 408.5571532449.

The spelling of 68195930 in words is "sixty-eight million, one hundred ninety-five thousand, nine hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 331 662 1655 1873 3310 3641 3746 7282 9365 18205 18730 20603 36410 41206 103015 206030 619963 1239926 3099815 6199630 6819593 13639186 34097965 68195930