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72082585 = 526953593
BaseRepresentation
bin1000100101111…
…10010010011001
312000122011201101
410102332102121
5121423120320
611052551401
71533456211
oct422762231
9160564641
1072082585
1137763793
1220182561
1311c1a723
149805241
1564dcc0a
hex44be499

72082585 has 8 divisors (see below), whose sum is σ = 86822280. Its totient is φ = 57450624.

The previous prime is 72082573. The next prime is 72082607. The reversal of 72082585 is 58528027.

It can be written as a sum of positive squares in 4 ways, for example, as 104329 + 71978256 = 323^2 + 8484^2 .

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 72082585 - 211 = 72080537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25452 + ... + 28141.

It is an arithmetic number, because the mean of its divisors is an integer number (10852785).

Almost surely, 272082585 is an apocalyptic number.

It is an amenable number.

72082585 is a deficient number, since it is larger than the sum of its proper divisors (14739695).

72082585 is a wasteful number, since it uses less digits than its factorization.

72082585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53867.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 72082585 is about 8490.1463473841. The cubic root of 72082585 is about 416.1757628371.

The spelling of 72082585 in words is "seventy-two million, eighty-two thousand, five hundred eighty-five".

Divisors: 1 5 269 1345 53593 267965 14416517 72082585