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8220201 = 311249097
BaseRepresentation
bin11111010110111000101001
3120110121222220
4133112320221
54101021301
6452104253
7126604413
oct37267051
916417886
108220201
114704a60
122905089
13191a732
14113d9b3
15ac5936
hex7d6e29

8220201 has 8 divisors (see below), whose sum is σ = 11956704. Its totient is φ = 4981920.

The previous prime is 8220193. The next prime is 8220203. The reversal of 8220201 is 1020228.

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

It is not a de Polignac number, because 8220201 - 23 = 8220193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8220203) 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, 124516 + ... + 124581.

It is an arithmetic number, because the mean of its divisors is an integer number (1494588).

Almost surely, 28220201 is an apocalyptic number.

It is an amenable number.

8220201 is a deficient number, since it is larger than the sum of its proper divisors (3736503).

8220201 is a wasteful number, since it uses less digits than its factorization.

8220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249111.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 8220201 is about 2867.0892905524. The cubic root of 8220201 is about 201.8184248804.

Adding to 8220201 its reverse (1020228), we get a palindrome (9240429).

The spelling of 8220201 in words is "eight million, two hundred twenty thousand, two hundred one".

Divisors: 1 3 11 33 249097 747291 2740067 8220201