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87845056 = 2613195557
BaseRepresentation
bin1010011110001…
…10100011000000
320010021222202121
411033012203000
5134442020211
612414454024
72114446015
oct517064300
9203258677
1087845056
114564a322
1225504314
1315279130
14b94970c
157aa3271
hex53c68c0

87845056 has 56 divisors (see below), whose sum is σ = 197642480. Its totient is φ = 38403072.

The previous prime is 87845033. The next prime is 87845057. The reversal of 87845056 is 65054878.

It is not an unprimeable number, because it can be changed into a prime (87845057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13030 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (3529330).

Almost surely, 287845056 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 87845056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98821240).

87845056 is an abundant number, since it is smaller than the sum of its proper divisors (109797424).

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

87845056 is a wasteful number, since it uses less digits than its factorization.

87845056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601 (or 5591 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 87845056 is about 9372.5693382338. The cubic root of 87845056 is about 444.5348099217.

The spelling of 87845056 in words is "eighty-seven million, eight hundred forty-five thousand, fifty-six".

Divisors: 1 2 4 8 13 16 19 26 32 38 52 64 76 104 152 208 247 304 416 494 608 832 988 1216 1976 3952 5557 7904 11114 15808 22228 44456 72241 88912 105583 144482 177824 211166 288964 355648 422332 577928 844664 1155856 1372579 1689328 2311712 2745158 3378656 4623424 5490316 6757312 10980632 21961264 43922528 87845056