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164115213 = 361788663
BaseRepresentation
bin10011100100000…
…11001100001101
3102102210220202020
421302003030031
5314003141323
624141320353
74031646003
oct1162031415
9372726666
10164115213
1184703209
1246b660b9
13280018c2
1417b20a73
15e61bae3
hex9c8330d

164115213 has 8 divisors (see below), whose sum is σ = 219177408. Its totient is φ = 109231584.

The previous prime is 164115163. The next prime is 164115223. The reversal of 164115213 is 312511461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164115213 - 210 = 164114189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164115223) 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, 42481 + ... + 46182.

It is an arithmetic number, because the mean of its divisors is an integer number (27397176).

Almost surely, 2164115213 is an apocalyptic number.

It is an amenable number.

164115213 is a deficient number, since it is larger than the sum of its proper divisors (55062195).

164115213 is an equidigital number, since it uses as much as digits as its factorization.

164115213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89283.

The product of its digits is 720, while the sum is 24.

The square root of 164115213 is about 12810.7459970136. The cubic root of 164115213 is about 547.4985167075.

Adding to 164115213 its reverse (312511461), we get a palindrome (476626674).

The spelling of 164115213 in words is "one hundred sixty-four million, one hundred fifteen thousand, two hundred thirteen".

Divisors: 1 3 617 1851 88663 265989 54705071 164115213