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164380223 = 7193281433
BaseRepresentation
bin10011100110000…
…11111000111111
3102110022101021102
421303003320333
5314040131343
624151123315
74034131430
oct1163037077
9373271242
10164380223
1184874327
124707353b
1328095407
1417b8d487
15e6703b8
hex9cc3e3f

164380223 has 16 divisors (see below), whose sum is σ = 189946176. Its totient is φ = 139345920.

The previous prime is 164380217. The next prime is 164380243. The reversal of 164380223 is 322083461.

It is not a de Polignac number, because 164380223 - 28 = 164379967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164380243) 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 15 ways as a sum of consecutive naturals, for example, 379415 + ... + 379847.

It is an arithmetic number, because the mean of its divisors is an integer number (11871636).

Almost surely, 2164380223 is an apocalyptic number.

164380223 is a deficient number, since it is larger than the sum of its proper divisors (25565953).

164380223 is a wasteful number, since it uses less digits than its factorization.

164380223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 164380223 is about 12821.0850944840. The cubic root of 164380223 is about 547.7930548182.

The spelling of 164380223 in words is "one hundred sixty-four million, three hundred eighty thousand, two hundred twenty-three".

Divisors: 1 7 193 281 433 1351 1967 3031 54233 83569 121673 379631 584983 851711 23482889 164380223