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87878469070 = 25717613312041
BaseRepresentation
bin101000111010111110…
…1110000010111001110
322101211101211202210201
41101311331300113032
52414433342002240
6104212032324114
76230465443120
oct1216575602716
9271741752721
1087878469070
11342a6117547
12150463a363a
138396436232
144379249210
152444eaed9a
hex1475f705ce

87878469070 has 64 divisors (see below), whose sum is σ = 191459707776. Its totient is φ = 28350443520.

The previous prime is 87878468983. The next prime is 87878469097. The reversal of 87878469070 is 7096487878.

It is a junction number, because it is equal to n+sod(n) for n = 87878468993 and 87878469011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7292250 + ... + 7304290.

It is an arithmetic number, because the mean of its divisors is an integer number (2991557934).

Almost surely, 287878469070 is an apocalyptic number.

87878469070 is an abundant number, since it is smaller than the sum of its proper divisors (103581238706).

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

87878469070 is a wasteful number, since it uses less digits than its factorization.

87878469070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18205.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 87878469070 in words is "eighty-seven billion, eight hundred seventy-eight million, four hundred sixty-nine thousand, seventy".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 595 1190 6133 12041 12266 24082 30665 42931 60205 61330 84287 85862 104261 120410 168574 204697 208522 214655 409394 421435 429310 521305 729827 842870 1023485 1042610 1432879 1459654 2046970 2865758 3649135 7164395 7298270 14328790 73847453 147694906 369237265 516932171 738474530 1033864342 1255406701 2510813402 2584660855 5169321710 6277033505 8787846907 12554067010 17575693814 43939234535 87878469070