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272616985 = 5137397981
BaseRepresentation
bin10000001111111…
…100111000011001
3200222222101012101
4100033330320121
51024242220420
643015043401
76520130464
oct2017747031
9628871171
10272616985
1112a9811a3
1277370561
1344631034
14282c62db
1518e0060a
hex103fce19

272616985 has 8 divisors (see below), whose sum is σ = 329529096. Its totient is φ = 216501120.

The previous prime is 272616983. The next prime is 272617027. The reversal of 272616985 is 589616272.

It can be written as a sum of positive squares in 4 ways, for example, as 16232841 + 256384144 = 4029^2 + 16012^2 .

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

It is not a de Polignac number, because 272616985 - 21 = 272616983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272616983) 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, 198306 + ... + 199675.

It is an arithmetic number, because the mean of its divisors is an integer number (41191137).

Almost surely, 2272616985 is an apocalyptic number.

It is an amenable number.

272616985 is a deficient number, since it is larger than the sum of its proper divisors (56912111).

272616985 is a wasteful number, since it uses less digits than its factorization.

272616985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398123.

The product of its digits is 362880, while the sum is 46.

The square root of 272616985 is about 16511.1170124859. The cubic root of 272616985 is about 648.4118902761.

The spelling of 272616985 in words is "two hundred seventy-two million, six hundred sixteen thousand, nine hundred eighty-five".

Divisors: 1 5 137 685 397981 1989905 54523397 272616985