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68590912 = 2613194339
BaseRepresentation
bin1000001011010…
…01110101000000
311210001210001011
410011221311000
5120024402122
610450050304
71462004335
oct405516500
9153053034
1068590912
1135799405
121ab79994
1311297350
14917698c
15604d377
hex4169d40

68590912 has 56 divisors (see below), whose sum is σ = 154330400. Its totient is φ = 29984256.

The previous prime is 68590871. The next prime is 68590919. The reversal of 68590912 is 21909586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68590919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13639 + ... + 17977.

It is an arithmetic number, because the mean of its divisors is an integer number (2755900).

Almost surely, 268590912 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 68590912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77165200).

68590912 is an abundant number, since it is smaller than the sum of its proper divisors (85739488).

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

68590912 is a wasteful number, since it uses less digits than its factorization.

68590912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383 (or 4373 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 68590912 is about 8281.9630523204. The cubic root of 68590912 is about 409.3444053588.

The spelling of 68590912 in words is "sixty-eight million, five hundred ninety thousand, nine hundred twelve".

Divisors: 1 2 4 8 13 16 19 26 32 38 52 64 76 104 152 208 247 304 416 494 608 832 988 1216 1976 3952 4339 7904 8678 15808 17356 34712 56407 69424 82441 112814 138848 164882 225628 277696 329764 451256 659528 902512 1071733 1319056 1805024 2143466 2638112 3610048 4286932 5276224 8573864 17147728 34295456 68590912