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85972293 = 3311289469
BaseRepresentation
bin1010001111111…
…01010101000101
312222202211211000
411013331111011
5134002103133
612310403513
72062516041
oct507752505
9188684730
1085972293
1144590290
1224960599
1314a718a4
14b5bd021
157833413
hex51fd545

85972293 has 16 divisors (see below), whose sum is σ = 138945600. Its totient is φ = 52104240.

The previous prime is 85972279. The next prime is 85972301. The reversal of 85972293 is 39227958.

It is not a de Polignac number, because 85972293 - 24 = 85972277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85972273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144438 + ... + 145031.

It is an arithmetic number, because the mean of its divisors is an integer number (8684100).

Almost surely, 285972293 is an apocalyptic number.

It is an amenable number.

85972293 is a deficient number, since it is larger than the sum of its proper divisors (52973307).

85972293 is a wasteful number, since it uses less digits than its factorization.

85972293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289489 (or 289483 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 85972293 is about 9272.1245138318. The cubic root of 85972293 is about 441.3530885032.

The spelling of 85972293 in words is "eighty-five million, nine hundred seventy-two thousand, two hundred ninety-three".

Divisors: 1 3 9 11 27 33 99 297 289469 868407 2605221 3184159 7815663 9552477 28657431 85972293