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68677552 = 24171997137
BaseRepresentation
bin1000001011111…
…10111110110000
311210020011220001
410011332332300
5120040140202
610451555344
71462515046
oct405767660
9153204801
1068677552
1135848509
121abbbb54
13112c7908
14919a396
156068d87
hex417efb0

68677552 has 80 divisors (see below), whose sum is σ = 150927840. Its totient is φ = 30081024.

The previous prime is 68677547. The next prime is 68677573. The reversal of 68677552 is 25577686.

It is a super-2 number, since 2×686775522 = 9433212297425408, which contains 22 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, 501228 + ... + 501364.

It is an arithmetic number, because the mean of its divisors is an integer number (1886598).

Almost surely, 268677552 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 68677552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75463920).

68677552 is an abundant number, since it is smaller than the sum of its proper divisors (82250288).

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

68677552 is a wasteful number, since it uses less digits than its factorization.

68677552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The square root of 68677552 is about 8287.1920455604. The cubic root of 68677552 is about 409.5166860883.

The spelling of 68677552 in words is "sixty-eight million, six hundred seventy-seven thousand, five hundred fifty-two".

Divisors: 1 2 4 8 16 17 19 34 38 68 76 97 136 137 152 194 272 274 304 323 388 548 646 776 1096 1292 1552 1649 1843 2192 2329 2584 2603 3298 3686 4658 5168 5206 6596 7372 9316 10412 13192 13289 14744 18632 20824 26384 26578 29488 31331 37264 41648 44251 53156 62662 88502 106312 125324 177004 212624 225913 250648 252491 354008 451826 501296 504982 708016 903652 1009964 1807304 2019928 3614608 4039856 4292347 8584694 17169388 34338776 68677552