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84280585 = 540941213
BaseRepresentation
bin1010000011000…
…00010100001001
312212120220020011
411001200110021
5133033434320
612210231521
72042241664
oct501402411
9185526204
1084280585
1143635284
12242855a1
13145cb88c
14b29c6db
1575ec05a
hex5060509

84280585 has 8 divisors (see below), whose sum is σ = 101386440. Its totient is φ = 67257984.

The previous prime is 84280549. The next prime is 84280613. The reversal of 84280585 is 58508248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55636681 + 28643904 = 7459^2 + 5352^2 .

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 84280585 - 213 = 84272393 is a prime.

It is an unprimeable number.

It is a Zeisel number, with parameters (101, -96).

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18562 + ... + 22651.

It is an arithmetic number, because the mean of its divisors is an integer number (12673305).

Almost surely, 284280585 is an apocalyptic number.

It is an amenable number.

84280585 is a deficient number, since it is larger than the sum of its proper divisors (17105855).

84280585 is a wasteful number, since it uses less digits than its factorization.

84280585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41627.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 84280585 is about 9180.4457952760. The cubic root of 84280585 is about 438.4390019629.

The spelling of 84280585 in words is "eighty-four million, two hundred eighty thousand, five hundred eighty-five".

Divisors: 1 5 409 2045 41213 206065 16856117 84280585