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130215205 = 5191136351
BaseRepresentation
bin1111100001011…
…10110100100101
3100002000121200101
413300232310211
5231313341310
620530544101
73140545111
oct760566445
9302017611
10130215205
116755967a
1237738031
1320c92723
1413418741
15b67243a
hex7c2ed25

130215205 has 8 divisors (see below), whose sum is σ = 157077504. Its totient is φ = 103626000.

The previous prime is 130215193. The next prime is 130215209. The reversal of 130215205 is 502512031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-130215205 is a prime.

It is a super-2 number, since 2×1302152052 = 33911999226384050, 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 (130215209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67221 + ... + 69130.

It is an arithmetic number, because the mean of its divisors is an integer number (19634688).

Almost surely, 2130215205 is an apocalyptic number.

It is an amenable number.

130215205 is a deficient number, since it is larger than the sum of its proper divisors (26862299).

130215205 is a wasteful number, since it uses less digits than its factorization.

130215205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136547.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 130215205 is about 11411.1877120657. The cubic root of 130215205 is about 506.8590823787.

Adding to 130215205 its reverse (502512031), we get a palindrome (632727236).

The spelling of 130215205 in words is "one hundred thirty million, two hundred fifteen thousand, two hundred five".

Divisors: 1 5 191 955 136351 681755 26043041 130215205