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90869246 = 21331112741
BaseRepresentation
bin1010110101010…
…00110111111110
320022222122011122
411122220313332
5141230303441
613003350542
72152242626
oct532506776
9208878148
1090869246
1147325456
1226522452
1315a977b0
14c0d5886
157e9e34b
hex56a8dfe

90869246 has 16 divisors (see below), whose sum is σ = 151525248. Its totient is φ = 40586400.

The previous prime is 90869231. The next prime is 90869249. The reversal of 90869246 is 64296809.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90869197 and 90869206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90869249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55565 + ... + 57176.

It is an arithmetic number, because the mean of its divisors is an integer number (9470328).

Almost surely, 290869246 is an apocalyptic number.

90869246 is a deficient number, since it is larger than the sum of its proper divisors (60656002).

90869246 is a wasteful number, since it uses less digits than its factorization.

90869246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112787.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 90869246 is about 9532.5361787931. The cubic root of 90869246 is about 449.5786112879.

The spelling of 90869246 in words is "ninety million, eight hundred sixty-nine thousand, two hundred forty-six".

Divisors: 1 2 13 26 31 62 403 806 112741 225482 1465633 2931266 3494971 6989942 45434623 90869246