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63220241 = 721290209
BaseRepresentation
bin1111000100101…
…0101000010001
311101221220212102
43301022220101
5112141021431
610135010145
71365235400
oct361125021
9141856772
1063220241
1132760337
1219209955
1310136936
148579637
15583bdcb
hex3c4aa11

63220241 has 6 divisors (see below), whose sum is σ = 73541970. Its totient is φ = 54188736.

The previous prime is 63220193. The next prime is 63220247. The reversal of 63220241 is 14202236.

It can be written as a sum of positive squares in only one way, i.e., 42198016 + 21022225 = 6496^2 + 4585^2 .

It is a de Polignac number, because none of the positive numbers 2k-63220241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63220247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645056 + ... + 645153.

It is an arithmetic number, because the mean of its divisors is an integer number (12256995).

Almost surely, 263220241 is an apocalyptic number.

It is an amenable number.

63220241 is a deficient number, since it is larger than the sum of its proper divisors (10321729).

63220241 is a wasteful number, since it uses less digits than its factorization.

63220241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290223 (or 1290216 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 63220241 is about 7951.1157078740. The cubic root of 63220241 is about 398.3688595770.

Adding to 63220241 its reverse (14202236), we get a palindrome (77422477).

The spelling of 63220241 in words is "sixty-three million, two hundred twenty thousand, two hundred forty-one".

Divisors: 1 7 49 1290209 9031463 63220241