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68750208 = 273419349
BaseRepresentation
bin1000001100100…
…00101110000000
311210100212120000
410012100232000
5120100001313
610453320000
71463236632
oct406205600
9153325500
1068750208
113589805a
121b036000
13113219c7
1491b8a52
156080673
hex4190b80

68750208 has 160 divisors (see below), whose sum is σ = 215985000. Its totient is φ = 21648384.

The previous prime is 68750179. The next prime is 68750251. The reversal of 68750208 is 80205786.

It is a super-2 number, since 2×687502082 = 9453182200086528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 196818 + ... + 197166.

Almost surely, 268750208 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 68750208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107992500).

68750208 is an abundant number, since it is smaller than the sum of its proper divisors (147234792).

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

68750208 is a wasteful number, since it uses less digits than its factorization.

68750208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 68750208 is about 8291.5745187509. The cubic root of 68750208 is about 409.6610484364.

The spelling of 68750208 in words is "sixty-eight million, seven hundred fifty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 19 24 27 32 36 38 48 54 57 64 72 76 81 96 108 114 128 144 152 162 171 192 216 228 288 304 324 342 349 384 432 456 513 576 608 648 684 698 864 912 1026 1047 1152 1216 1296 1368 1396 1539 1728 1824 2052 2094 2432 2592 2736 2792 3078 3141 3456 3648 4104 4188 5184 5472 5584 6156 6282 6631 7296 8208 8376 9423 10368 10944 11168 12312 12564 13262 16416 16752 18846 19893 21888 22336 24624 25128 26524 28269 32832 33504 37692 39786 44672 49248 50256 53048 56538 59679 65664 67008 75384 79572 98496 100512 106096 113076 119358 134016 150768 159144 179037 196992 201024 212192 226152 238716 301536 318288 358074 402048 424384 452304 477432 537111 603072 636576 716148 848768 904608 954864 1074222 1206144 1273152 1432296 1809216 1909728 2148444 2546304 2864592 3618432 3819456 4296888 5729184 7638912 8593776 11458368 17187552 22916736 34375104 68750208