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68384408 = 2325573343
BaseRepresentation
bin1000001001101…
…11011010011000
311202200021202212
410010313122120
5120001300113
610441414252
71460154311
oct404673230
9152607685
1068384408
1135668244
121aa9a388
1311224361
149121608
15600c0a8
hex4137698

68384408 has 16 divisors (see below), whose sum is σ = 128309280. Its totient is φ = 34168608.

The previous prime is 68384383. The next prime is 68384417. The reversal of 68384408 is 80448386.

It is a super-3 number, since 3×683844083 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18785 + ... + 22127.

It is an arithmetic number, because the mean of its divisors is an integer number (8019330).

Almost surely, 268384408 is an apocalyptic number.

It is an amenable number.

68384408 is a deficient number, since it is larger than the sum of its proper divisors (59924872).

68384408 is a wasteful number, since it uses less digits than its factorization.

68384408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906 (or 5902 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 68384408 is about 8269.4865620545. The cubic root of 68384408 is about 408.9331932976.

The spelling of 68384408 in words is "sixty-eight million, three hundred eighty-four thousand, four hundred eight".

Divisors: 1 2 4 8 2557 3343 5114 6686 10228 13372 20456 26744 8548051 17096102 34192204 68384408