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8120201 = 19427379
BaseRepresentation
bin11110111110011110001001
3120021112211012
4132332132021
54034321301
6450013305
7126010025
oct36763611
916245735
108120201
114646911
122877235
1318b406b
141115385
15aa5ebb
hex7be789

8120201 has 4 divisors (see below), whose sum is σ = 8547600. Its totient is φ = 7692804.

The previous prime is 8120179. The next prime is 8120207. The reversal of 8120201 is 1020218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8120201 - 214 = 8103817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8120207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213671 + ... + 213708.

It is an arithmetic number, because the mean of its divisors is an integer number (2136900).

Almost surely, 28120201 is an apocalyptic number.

It is an amenable number.

8120201 is a deficient number, since it is larger than the sum of its proper divisors (427399).

8120201 is a wasteful number, since it uses less digits than its factorization.

8120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427398.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 8120201 is about 2849.5966381227. The cubic root of 8120201 is about 200.9966996975.

Adding to 8120201 its reverse (1020218), we get a palindrome (9140419).

The spelling of 8120201 in words is "eight million, one hundred twenty thousand, two hundred one".

Divisors: 1 19 427379 8120201