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87503080 = 23571731593
BaseRepresentation
bin1010011011100…
…11000011101000
320002122121122211
411031303003220
5134400044310
612403254504
72111523010
oct515630350
9202577584
1087503080
11454363a5
122537a434
1315189592
14b89ac40
157a36c8a
hex53730e8

87503080 has 128 divisors (see below), whose sum is σ = 246343680. Its totient is φ = 27279360.

The previous prime is 87503071. The next prime is 87503083. The reversal of 87503080 is 8030578.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (87503083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147264 + ... + 147856.

It is an arithmetic number, because the mean of its divisors is an integer number (1924560).

Almost surely, 287503080 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 87503080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123171840).

87503080 is an abundant number, since it is smaller than the sum of its proper divisors (158840600).

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

87503080 is a wasteful number, since it uses less digits than its factorization.

87503080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 87503080 is about 9354.3080984111. The cubic root of 87503080 is about 443.9572098470.

The spelling of 87503080 in words is "eighty-seven million, five hundred three thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 17 20 28 31 34 35 40 56 62 68 70 85 119 124 136 140 155 170 217 238 248 280 310 340 434 476 527 593 595 620 680 868 952 1054 1085 1186 1190 1240 1736 2108 2170 2372 2380 2635 2965 3689 4151 4216 4340 4744 4760 5270 5930 7378 8302 8680 10081 10540 11860 14756 16604 18383 18445 20162 20755 21080 23720 29512 33208 36766 36890 40324 41510 50405 70567 73532 73780 80648 83020 91915 100810 128681 141134 147064 147560 166040 183830 201620 257362 282268 312511 352835 367660 403240 514724 564536 625022 643405 705670 735320 1029448 1250044 1286810 1411340 1562555 2187577 2500088 2573620 2822680 3125110 4375154 5147240 6250220 8750308 10937885 12500440 17500616 21875770 43751540 87503080