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87318016 = 29199857
BaseRepresentation
bin1010011010001…
…01111000000000
320002022012210121
411031011320000
5134323134031
612355310024
72110122322
oct515057000
9202265717
1087318016
114531a355
12252ab314
1315123286
14b84d612
1579ec011
hex5345e00

87318016 has 40 divisors (see below), whose sum is σ = 175546800. Its totient is φ = 43388928.

The previous prime is 87318013. The next prime is 87318017. The reversal of 87318016 is 61081378.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87318013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101460 + ... + 102316.

It is an arithmetic number, because the mean of its divisors is an integer number (4388670).

Almost surely, 287318016 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 87318016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87773400).

87318016 is an abundant number, since it is smaller than the sum of its proper divisors (88228784).

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

87318016 is an equidigital number, since it uses as much as digits as its factorization.

87318016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 87318016 is about 9344.4109498673. The cubic root of 87318016 is about 443.6440075886.

The spelling of 87318016 in words is "eighty-seven million, three hundred eighteen thousand, sixteen".

Divisors: 1 2 4 8 16 32 64 128 199 256 398 512 796 857 1592 1714 3184 3428 6368 6856 12736 13712 25472 27424 50944 54848 101888 109696 170543 219392 341086 438784 682172 1364344 2728688 5457376 10914752 21829504 43659008 87318016