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90682193 = 7219257379
BaseRepresentation
bin1010110011110…
…11001101010001
320022122010120202
411121323031101
5141203312233
612555344545
72150533400
oct531731521
9208563522
1090682193
1147207968
1226452155
1315a30604
14c087637
157e63be8
hex567b351

90682193 has 24 divisors (see below), whose sum is σ = 111765600. Its totient is φ = 73156608.

The previous prime is 90682183. The next prime is 90682213. The reversal of 90682193 is 39128609.

It is not a de Polignac number, because 90682193 - 212 = 90678097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90682183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239078 + ... + 239456.

It is an arithmetic number, because the mean of its divisors is an integer number (4656900).

Almost surely, 290682193 is an apocalyptic number.

It is an amenable number.

90682193 is a deficient number, since it is larger than the sum of its proper divisors (21083407).

90682193 is a wasteful number, since it uses less digits than its factorization.

90682193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 90682193 is about 9522.7198320648. The cubic root of 90682193 is about 449.2699157334.

The spelling of 90682193 in words is "ninety million, six hundred eighty-two thousand, one hundred ninety-three".

Divisors: 1 7 19 49 133 257 379 931 1799 2653 4883 7201 12593 18571 34181 50407 97403 239267 352849 681821 1850657 4772747 12954599 90682193