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82063931 = 2318711907
BaseRepresentation
bin1001110010000…
…11001000111011
312201102021112212
410321003020323
5132002021211
612050525335
72014350305
oct471031073
9181367485
1082063931
1142360934
122359684b
1314003951
14ac82975
15731038b
hex4e4323b

82063931 has 8 divisors (see below), whose sum is σ = 85722624. Its totient is φ = 78412840.

The previous prime is 82063903. The next prime is 82063937. The reversal of 82063931 is 13936028.

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 82063931 - 210 = 82062907 is a prime.

It is a super-2 number, since 2×820639312 = 13468977542345522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82063937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42080 + ... + 43986.

It is an arithmetic number, because the mean of its divisors is an integer number (10715328).

Almost surely, 282063931 is an apocalyptic number.

82063931 is a deficient number, since it is larger than the sum of its proper divisors (3658693).

82063931 is a wasteful number, since it uses less digits than its factorization.

82063931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 82063931 is about 9058.9144493146. The cubic root of 82063931 is about 434.5610245507.

Adding to 82063931 its reverse (13936028), we get a palindrome (95999959).

The spelling of 82063931 in words is "eighty-two million, sixty-three thousand, nine hundred thirty-one".

Divisors: 1 23 1871 1907 43033 43861 3567997 82063931