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85980319 = 893792549
BaseRepresentation
bin1010001111111…
…11010010011111
312222210020211021
411013333102133
5134002332234
612310505011
72062551325
oct507772237
9188706737
1085980319
1144596317
1224965167
1314a75439
14b5c1d15
1578359b4
hex51ff49f

85980319 has 8 divisors (see below), whose sum is σ = 87210000. Its totient is φ = 84756672.

The previous prime is 85980317. The next prime is 85980347. The reversal of 85980319 is 91308958.

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 85980319 - 21 = 85980317 is a prime.

It is a super-2 number, since 2×859803192 = 14785230510683522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85980313) 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, 32457 + ... + 35005.

It is an arithmetic number, because the mean of its divisors is an integer number (10901250).

Almost surely, 285980319 is an apocalyptic number.

85980319 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

85980319 is a deficient number, since it is larger than the sum of its proper divisors (1229681).

85980319 is a wasteful number, since it uses less digits than its factorization.

85980319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 85980319 is about 9272.5573063745. The cubic root of 85980319 is about 441.3668223452.

The spelling of 85980319 in words is "eighty-five million, nine hundred eighty thousand, three hundred nineteen".

Divisors: 1 89 379 2549 33731 226861 966071 85980319