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87872328 = 233223471129
BaseRepresentation
bin1010011110011…
…01001101001000
320010100101011200
411033031031020
5134443403303
612415224200
72114621355
oct517151510
9203311150
1087872328
1145668865
1225518060
131528867b
14b95562c
157aab3a3
hex53cd348

87872328 has 96 divisors (see below), whose sum is σ = 253843200. Its totient is φ = 27396864.

The previous prime is 87872293. The next prime is 87872329. The reversal of 87872328 is 82327878.

87872328 = T487 + T488 + ... + T862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87872329) 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 23 ways as a sum of consecutive naturals, for example, 77268 + ... + 78396.

It is an arithmetic number, because the mean of its divisors is an integer number (2644200).

Almost surely, 287872328 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 87872328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126921600).

87872328 is an abundant number, since it is smaller than the sum of its proper divisors (165970872).

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

87872328 is a wasteful number, since it uses less digits than its factorization.

87872328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1204 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 87872328 is about 9374.0241092073. The cubic root of 87872328 is about 444.5808079533.

The spelling of 87872328 in words is "eighty-seven million, eight hundred seventy-two thousand, three hundred twenty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 23 24 36 46 47 69 72 92 94 138 141 184 188 207 276 282 376 414 423 552 564 828 846 1081 1128 1129 1656 1692 2162 2258 3243 3384 3387 4324 4516 6486 6774 8648 9032 9729 10161 12972 13548 19458 20322 25944 25967 27096 38916 40644 51934 53063 77832 77901 81288 103868 106126 155802 159189 207736 212252 233703 311604 318378 424504 467406 477567 623208 636756 934812 955134 1220449 1273512 1869624 1910268 2440898 3661347 3820536 4881796 7322694 9763592 10984041 14645388 21968082 29290776 43936164 87872328