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87869071 = 532576451
BaseRepresentation
bin1010011110011…
…00011010001111
320010100012201001
411033030122033
5134443302241
612415201131
72114606023
oct517143217
9203305631
1087869071
1145666374
12255161a7
1315287044
14b954383
157aaa431
hex53cc68f

87869071 has 8 divisors (see below), whose sum is σ = 89889264. Its totient is φ = 85862400.

The previous prime is 87869069. The next prime is 87869087. The reversal of 87869071 is 17096878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87869071 - 21 = 87869069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87869021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10396 + ... + 16846.

It is an arithmetic number, because the mean of its divisors is an integer number (11236158).

Almost surely, 287869071 is an apocalyptic number.

87869071 is a deficient number, since it is larger than the sum of its proper divisors (2020193).

87869071 is a wasteful number, since it uses less digits than its factorization.

87869071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 87869071 is about 9373.8503828470. The cubic root of 87869071 is about 444.5753150690.

The spelling of 87869071 in words is "eighty-seven million, eight hundred sixty-nine thousand, seventy-one".

Divisors: 1 53 257 6451 13621 341903 1657907 87869071