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87003217 = 729394229
BaseRepresentation
bin1010010111110…
…01000001010001
320001201012222101
411023321001101
5134233100332
612344440401
72104341460
oct513710121
9201635871
1087003217
1145124894
1225179101
1315042bc2
14b7aa9d7
157988ae7
hex52f9051

87003217 has 8 divisors (see below), whose sum is σ = 99489600. Its totient is φ = 74531184.

The previous prime is 87003211. The next prime is 87003221. The reversal of 87003217 is 71230078.

It is a happy number.

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

It is not a de Polignac number, because 87003217 - 219 = 86478929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87003211) 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, 18459 + ... + 22687.

It is an arithmetic number, because the mean of its divisors is an integer number (12436200).

Almost surely, 287003217 is an apocalyptic number.

It is an amenable number.

87003217 is a deficient number, since it is larger than the sum of its proper divisors (12486383).

87003217 is a wasteful number, since it uses less digits than its factorization.

87003217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 87003217 is about 9327.5515007959. The cubic root of 87003217 is about 443.1102236653.

The spelling of 87003217 in words is "eighty-seven million, three thousand, two hundred seventeen".

Divisors: 1 7 2939 4229 20573 29603 12429031 87003217