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164180447 = 4711033167
BaseRepresentation
bin10011100100100…
…11000111011111
3102102221020020022
421302103013133
5314012233242
624142542355
74032340124
oct1162230737
9372836208
10164180447
1184748222
1246b979bb
13280254c2
1417b3a74b
15e6310d2
hex9c931df

164180447 has 8 divisors (see below), whose sum is σ = 167878656. Its totient is φ = 160490872.

The previous prime is 164180413. The next prime is 164180453. The reversal of 164180447 is 744081461.

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 164180447 - 26 = 164180383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164180477) 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, 50258 + ... + 53424.

It is an arithmetic number, because the mean of its divisors is an integer number (20984832).

Almost surely, 2164180447 is an apocalyptic number.

164180447 is a deficient number, since it is larger than the sum of its proper divisors (3698209).

164180447 is a wasteful number, since it uses less digits than its factorization.

164180447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 164180447 is about 12813.2918096795. The cubic root of 164180447 is about 547.5710486531.

The spelling of 164180447 in words is "one hundred sixty-four million, one hundred eighty thousand, four hundred forty-seven".

Divisors: 1 47 1103 3167 51841 148849 3493201 164180447