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87316860 = 223511291289
BaseRepresentation
bin1010011010001…
…01100101111100
320002022011012210
411031011211330
5134323114420
612355300420
72110116051
oct515054574
9202264183
1087316860
11453194a4
12252aa710
13151228a7
14b84d028
1579eb9e0
hex534597c

87316860 has 48 divisors (see below), whose sum is σ = 244893600. Its totient is φ = 23245824.

The previous prime is 87316849. The next prime is 87316861. The reversal of 87316860 is 6861378.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87316861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67096 + ... + 68384.

It is an arithmetic number, because the mean of its divisors is an integer number (5101950).

Almost surely, 287316860 is an apocalyptic number.

It is an amenable number.

87316860 is an abundant number, since it is smaller than the sum of its proper divisors (157576740).

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

87316860 is a wasteful number, since it uses less digits than its factorization.

87316860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430 (or 2428 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 87316860 is about 9344.3490945063. The cubic root of 87316860 is about 443.6420497844.

The spelling of 87316860 in words is "eighty-seven million, three hundred sixteen thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1129 1289 2258 2578 3387 3867 4516 5156 5645 6445 6774 7734 11290 12890 13548 15468 16935 19335 22580 25780 33870 38670 67740 77340 1455281 2910562 4365843 5821124 7276405 8731686 14552810 17463372 21829215 29105620 43658430 87316860