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68761088 = 291129421
BaseRepresentation
bin1000001100100…
…11011000000000
311210101102110222
410012103120000
5120100323323
610453442212
71463313434
oct406233000
9153342428
1068761088
11358a5250
121b040368
1311326946
1491bc9c4
1560839c8
hex4193600

68761088 has 80 divisors (see below), whose sum is σ = 155414160. Its totient is φ = 30105600.

The previous prime is 68761079. The next prime is 68761097. The reversal of 68761088 is 88016786.

It is an interprime number because it is at equal distance from previous prime (68761079) and next prime (68761097).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163118 + ... + 163538.

It is an arithmetic number, because the mean of its divisors is an integer number (1942677).

Almost surely, 268761088 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 68761088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77707080).

68761088 is an abundant number, since it is smaller than the sum of its proper divisors (86653072).

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

68761088 is a wasteful number, since it uses less digits than its factorization.

68761088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68761088 is about 8292.2305804892. The cubic root of 68761088 is about 409.6826574722.

The spelling of 68761088 in words is "sixty-eight million, seven hundred sixty-one thousand, eighty-eight".

Divisors: 1 2 4 8 11 16 22 29 32 44 58 64 88 116 128 176 232 256 319 352 421 464 512 638 704 842 928 1276 1408 1684 1856 2552 2816 3368 3712 4631 5104 5632 6736 7424 9262 10208 12209 13472 14848 18524 20416 24418 26944 37048 40832 48836 53888 74096 81664 97672 107776 134299 148192 163328 195344 215552 268598 296384 390688 537196 592768 781376 1074392 1185536 1562752 2148784 2371072 3125504 4297568 6251008 8595136 17190272 34380544 68761088