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72060085 = 514412017
BaseRepresentation
bin1000100101110…
…00110010110101
312000121000212001
410102320302311
5121421410320
611052255301
71533333466
oct422706265
9160530761
1072060085
1137748899
1220171531
1311c10406
1497dad6d
1564d620a
hex44b8cb5

72060085 has 4 divisors (see below), whose sum is σ = 86472108. Its totient is φ = 57648064.

The previous prime is 72060077. The next prime is 72060097. The reversal of 72060085 is 58006027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58006027 = 59983153.

It can be written as a sum of positive squares in 2 ways, for example, as 56896849 + 15163236 = 7543^2 + 3894^2 .

It is a cyclic number.

It is not a de Polignac number, because 72060085 - 23 = 72060077 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7206004 + ... + 7206013.

It is an arithmetic number, because the mean of its divisors is an integer number (21618027).

Almost surely, 272060085 is an apocalyptic number.

It is an amenable number.

72060085 is a deficient number, since it is larger than the sum of its proper divisors (14412023).

72060085 is a wasteful number, since it uses less digits than its factorization.

72060085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14412022.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 72060085 is about 8488.8211784676. The cubic root of 72060085 is about 416.1324563569.

The spelling of 72060085 in words is "seventy-two million, sixty thousand, eighty-five".

Divisors: 1 5 14412017 72060085