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130220441 = 1310016957
BaseRepresentation
bin1111100001100…
…00000110011001
3100002000212212022
413300300012121
5231314023231
620531024225
73140566301
oct760600631
9302025768
10130220441
11675625aa
123773b075
1320c94c20
141341a601
15b673c7b
hex7c30199

130220441 has 4 divisors (see below), whose sum is σ = 140237412. Its totient is φ = 120203472.

The previous prime is 130220423. The next prime is 130220449. The reversal of 130220441 is 144022031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144022031 = 193374507.

It can be written as a sum of positive squares in 2 ways, for example, as 53290000 + 76930441 = 7300^2 + 8771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130220441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130220449) 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, 5008466 + ... + 5008491.

It is an arithmetic number, because the mean of its divisors is an integer number (35059353).

Almost surely, 2130220441 is an apocalyptic number.

It is an amenable number.

130220441 is a deficient number, since it is larger than the sum of its proper divisors (10016971).

130220441 is a wasteful number, since it uses less digits than its factorization.

130220441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016970.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 130220441 is about 11411.4171337306. The cubic root of 130220441 is about 506.8658759494.

Adding to 130220441 its reverse (144022031), we get a palindrome (274242472).

The spelling of 130220441 in words is "one hundred thirty million, two hundred twenty thousand, four hundred forty-one".

Divisors: 1 13 10016957 130220441