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130222981 = 767727479
BaseRepresentation
bin1111100001100…
…00101110000101
3100002001000100101
413300300232011
5231314113411
620531044101
73140606560
oct760605605
9302030311
10130222981
11675644a9
1237740631
1320c96125
141341b4d7
15b6748c1
hex7c30b85

130222981 has 8 divisors (see below), whose sum is σ = 149051520. Its totient is φ = 111450768.

The previous prime is 130222969. The next prime is 130222991. The reversal of 130222981 is 189222031.

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 130222981 - 217 = 130091909 is a prime.

It is a super-2 number, since 2×1302229812 = 33916049561052722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130222921) 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, 9001 + ... + 18478.

It is an arithmetic number, because the mean of its divisors is an integer number (18631440).

Almost surely, 2130222981 is an apocalyptic number.

It is an amenable number.

130222981 is a deficient number, since it is larger than the sum of its proper divisors (18828539).

130222981 is an equidigital number, since it uses as much as digits as its factorization.

130222981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28163.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 130222981 is about 11411.5284252373. The cubic root of 130222981 is about 506.8691714662.

The spelling of 130222981 in words is "one hundred thirty million, two hundred twenty-two thousand, nine hundred eighty-one".

Divisors: 1 7 677 4739 27479 192353 18603283 130222981