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68516160 = 2635149479
BaseRepresentation
bin1000001010101…
…11100101000000
311202220222111120
410011113211000
5120020004120
610444312240
71461243366
oct405274500
9152828446
1068516160
1135748229
121ab42680
131126c30b
149157636
156036140
hex4157940

68516160 has 112 divisors (see below), whose sum is σ = 219456000. Its totient is φ = 18110464.

The previous prime is 68516101. The next prime is 68516167. The reversal of 68516160 is 6161586.

It is a super-2 number, since 2×685161602 = 9388928362291200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142801 + ... + 143279.

Almost surely, 268516160 is an apocalyptic number.

68516160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68516160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109728000).

68516160 is an abundant number, since it is smaller than the sum of its proper divisors (150939840).

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

68516160 is a wasteful number, since it uses less digits than its factorization.

68516160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68516160 is about 8277.4488823550. The cubic root of 68516160 is about 409.1956468971.

The spelling of 68516160 in words is "sixty-eight million, five hundred sixteen thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 149 160 192 240 298 320 447 479 480 596 745 894 958 960 1192 1437 1490 1788 1916 2235 2384 2395 2874 2980 3576 3832 4470 4768 4790 5748 5960 7152 7185 7664 8940 9536 9580 11496 11920 14304 14370 15328 17880 19160 22992 23840 28608 28740 30656 35760 38320 45984 47680 57480 71371 71520 76640 91968 114960 142742 143040 153280 214113 229920 285484 356855 428226 459840 570968 713710 856452 1070565 1141936 1427420 1712904 2141130 2283872 2854840 3425808 4282260 4567744 5709680 6851616 8564520 11419360 13703232 17129040 22838720 34258080 68516160