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130444951 = 7132515711
BaseRepresentation
bin1111100011001…
…10111010010111
3100002110021211111
413301212322113
5231343214301
620535515451
73142522660
oct761467227
9302407744
10130444951
11676a624a
1237828b87
1321043180
1413478367
15b6ba551
hex7c66e97

130444951 has 16 divisors (see below), whose sum is σ = 161215488. Its totient is φ = 102780000.

The previous prime is 130444939. The next prime is 130444973. The reversal of 130444951 is 159444031.

It is a 5-Lehmer number, since φ(130444951) divides (130444951-1)5.

It is a cyclic number.

It is not a de Polignac number, because 130444951 - 29 = 130444439 is a prime.

It is a deceptive number, since it divides R130444950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130444981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19986 + ... + 25696.

It is an arithmetic number, because the mean of its divisors is an integer number (10075968).

Almost surely, 2130444951 is an apocalyptic number.

130444951 is the 5711-st decagonal number.

130444951 is a deficient number, since it is larger than the sum of its proper divisors (30770537).

130444951 is a wasteful number, since it uses less digits than its factorization.

130444951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 130444951 is about 11421.2499753748. The cubic root of 130444951 is about 507.1570005521.

Adding to 130444951 its reverse (159444031), we get a palindrome (289888982).

The spelling of 130444951 in words is "one hundred thirty million, four hundred forty-four thousand, nine hundred fifty-one".

Divisors: 1 7 13 91 251 1757 3263 5711 22841 39977 74243 519701 1433461 10034227 18634993 130444951