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320442093 = 32263331409
BaseRepresentation
bin10011000110011…
…000111011101101
3211022222010220200
4103012120323231
51124013121333
651444104113
710640466336
oct2306307355
9738863820
10320442093
11154976984
128b395039
135150750a
14307b528d
151d1eac13
hex13198eed

320442093 has 24 divisors (see below), whose sum is σ = 467163840. Its totient is φ = 211654080.

The previous prime is 320442079. The next prime is 320442127. The reversal of 320442093 is 390244023.

It is a happy number.

It is not a de Polignac number, because 320442093 - 24 = 320442077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320442043) 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, 783273 + ... + 783681.

It is an arithmetic number, because the mean of its divisors is an integer number (19465160).

Almost surely, 2320442093 is an apocalyptic number.

It is an amenable number.

320442093 is a deficient number, since it is larger than the sum of its proper divisors (146721747).

320442093 is a wasteful number, since it uses less digits than its factorization.

320442093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 320442093 is about 17900.8964300674. The cubic root of 320442093 is about 684.3052205580.

The spelling of 320442093 in words is "three hundred twenty million, four hundred forty-two thousand, ninety-three".

Divisors: 1 3 9 263 331 409 789 993 1227 2367 2979 3681 87053 107567 135379 261159 322701 406137 783477 968103 1218411 35604677 106814031 320442093