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87351340 = 2254367567
BaseRepresentation
bin1010011010011…
…10000000101100
320002100220111211
411031032000230
5134330220330
612400124204
72110321426
oct515160054
9202326454
1087351340
114534239a
1225306664
13151354ab
14b85b816
157a06d2a
hex534e02c

87351340 has 12 divisors (see below), whose sum is σ = 183437856. Its totient is φ = 34940528.

The previous prime is 87351331. The next prime is 87351343. The reversal of 87351340 is 4315378.

It is not an unprimeable number, because it can be changed into a prime (87351343) 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 3 ways as a sum of consecutive naturals, for example, 2183764 + ... + 2183803.

It is an arithmetic number, because the mean of its divisors is an integer number (15286488).

Almost surely, 287351340 is an apocalyptic number.

It is an amenable number.

87351340 is an abundant number, since it is smaller than the sum of its proper divisors (96086516).

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

87351340 is a wasteful number, since it uses less digits than its factorization.

87351340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367576 (or 4367574 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 87351340 is about 9346.1938777237. The cubic root of 87351340 is about 443.7004377629.

The spelling of 87351340 in words is "eighty-seven million, three hundred fifty-one thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 4367567 8735134 17470268 21837835 43675670 87351340