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87431036000 = 2553711319157
BaseRepresentation
bin101000101101101001…
…0111011110001100000
322100200012220211000112
41101123102323301200
52413024321123000
6104055410310452
76213423354410
oct1213322736140
9270605824015
1087431036000
11340965a4450
1214b40588428
138324827a39
144335a58640
15241aa7c235
hex145b4bbc60

87431036000 has 384 divisors, whose sum is σ = 276494819328. Its totient is φ = 26369280000.

The previous prime is 87431035997. The next prime is 87431036029. The reversal of 87431036000 is 63013478.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9543422 + ... + 9552578.

It is an arithmetic number, because the mean of its divisors is an integer number (720038592).

Almost surely, 287431036000 is an apocalyptic number.

87431036000 is a gapful number since it is divisible by the number (80) 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 87431036000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138247409664).

87431036000 is an abundant number, since it is smaller than the sum of its proper divisors (189063783328).

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

87431036000 is a wasteful number, since it uses less digits than its factorization.

87431036000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9231 (or 9213 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 87431036000 its reverse (63013478), we get a palindrome (87494049478).

The spelling of 87431036000 in words is "eighty-seven billion, four hundred thirty-one million, thirty-six thousand".