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164448205 = 5289711353
BaseRepresentation
bin10011100110101…
…00011111001101
3102110102211112021
421303110133031
5314044320310
624152410141
74034533555
oct1163243715
9373384467
10164448205
1184910409
12470a6951
13280ba33c
1417baa165
15e6855da
hex9cd47cd

164448205 has 8 divisors (see below), whose sum is σ = 197423352. Its totient is φ = 131501568.

The previous prime is 164448203. The next prime is 164448233. The reversal of 164448205 is 502844461.

It can be written as a sum of positive squares in 4 ways, for example, as 44521 + 164403684 = 211^2 + 12822^2 .

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 164448205 - 21 = 164448203 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 (164448203) 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, 8809 + ... + 20161.

It is an arithmetic number, because the mean of its divisors is an integer number (24677919).

Almost surely, 2164448205 is an apocalyptic number.

It is an amenable number.

164448205 is a deficient number, since it is larger than the sum of its proper divisors (32975147).

164448205 is a wasteful number, since it uses less digits than its factorization.

164448205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14255.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 164448205 is about 12823.7360000898. The cubic root of 164448205 is about 547.8685605253.

It can be divided in two parts, 16444 and 8205, that added together give a square (24649 = 1572).

The spelling of 164448205 in words is "one hundred sixty-four million, four hundred forty-eight thousand, two hundred five".

Divisors: 1 5 2897 11353 14485 56765 32889641 164448205