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87300780 = 223571712227
BaseRepresentation
bin1010011010000…
…01101010101100
320002021100011020
411031001222230
5134322111110
612355054140
72110021140
oct515015254
9202240136
1087300780
1145308406
12252a1350
1315118488
14b847220
1579e6d70
hex5341aac

87300780 has 96 divisors (see below), whose sum is σ = 295819776. Its totient is φ = 18779136.

The previous prime is 87300779. The next prime is 87300781. The reversal of 87300780 is 8700378.

It is an interprime number because it is at equal distance from previous prime (87300779) and next prime (87300781).

It is not an unprimeable number, because it can be changed into a prime (87300781) 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, 1027 + ... + 13253.

It is an arithmetic number, because the mean of its divisors is an integer number (3081456).

Almost surely, 287300780 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 87300780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147909888).

87300780 is an abundant number, since it is smaller than the sum of its proper divisors (208518996).

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

87300780 is a wasteful number, since it uses less digits than its factorization.

87300780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263 (or 12261 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 87300780 is about 9343.4886418297. The cubic root of 87300780 is about 443.6148148681.

The spelling of 87300780 in words is "eighty-seven million, three hundred thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 17 20 21 28 30 34 35 42 51 60 68 70 84 85 102 105 119 140 170 204 210 238 255 340 357 420 476 510 595 714 1020 1190 1428 1785 2380 3570 7140 12227 24454 36681 48908 61135 73362 85589 122270 146724 171178 183405 207859 244540 256767 342356 366810 415718 427945 513534 623577 733620 831436 855890 1027068 1039295 1247154 1283835 1455013 1711780 2078590 2494308 2567670 2910026 3117885 4157180 4365039 5135340 5820052 6235770 7275065 8730078 12471540 14550130 17460156 21825195 29100260 43650390 87300780