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42688360 = 235111317439
BaseRepresentation
bin1010001011010…
…1111101101000
32222022210102101
42202311331220
541412011420
64122543144
71025562601
oct242657550
988283371
1042688360
1122107440
1212367ab4
138ac83b0
145952da8
153b3360a
hex28b5f68

42688360 has 128 divisors (see below), whose sum is σ = 119750400. Its totient is φ = 13455360.

The previous prime is 42688337. The next prime is 42688363. The reversal of 42688360 is 6388624.

It is a super-3 number, since 3×426883603 (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42688363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97021 + ... + 97459.

It is an arithmetic number, because the mean of its divisors is an integer number (935550).

Almost surely, 242688360 is an apocalyptic number.

42688360 is a gapful number since it is divisible by the number (40) 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 42688360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59875200).

42688360 is an abundant number, since it is smaller than the sum of its proper divisors (77062040).

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

42688360 is a wasteful number, since it uses less digits than its factorization.

42688360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 42688360 is about 6533.6329863254. The cubic root of 42688360 is about 349.4913973362.

The spelling of 42688360 in words is "forty-two million, six hundred eighty-eight thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 11 13 17 20 22 26 34 40 44 52 55 65 68 85 88 104 110 130 136 143 170 187 220 221 260 286 340 374 439 440 442 520 572 680 715 748 878 884 935 1105 1144 1430 1496 1756 1768 1870 2195 2210 2431 2860 3512 3740 4390 4420 4829 4862 5707 5720 7463 7480 8780 8840 9658 9724 11414 12155 14926 17560 19316 19448 22828 24145 24310 28535 29852 37315 38632 45656 48290 48620 57070 59704 62777 74630 82093 96580 97019 97240 114140 125554 149260 164186 193160 194038 228280 251108 298520 313885 328372 388076 410465 485095 502216 627770 656744 776152 820930 970190 1067209 1255540 1641860 1940380 2134418 2511080 3283720 3880760 4268836 5336045 8537672 10672090 21344180 42688360