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11980415 = 531372089
BaseRepresentation
bin101101101100…
…111001111111
3211112200001002
4231230321333
511031333130
61104440515
7203555216
oct55547177
924480032
1011980415
116843077
12401913b
132636105
14183c07d
1510b9b45
hexb6ce7f

11980415 has 16 divisors (see below), whose sum is σ = 15248640. Its totient is φ = 9020160.

The previous prime is 11980399. The next prime is 11980417. The reversal of 11980415 is 51408911.

It is not a de Polignac number, because 11980415 - 24 = 11980399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980417) 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, 4691 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (953040).

Almost surely, 211980415 is an apocalyptic number.

11980415 is a deficient number, since it is larger than the sum of its proper divisors (3268225).

11980415 is a wasteful number, since it uses less digits than its factorization.

11980415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 11980415 is about 3461.2736095258. The cubic root of 11980415 is about 228.8182294207.

The spelling of 11980415 in words is "eleven million, nine hundred eighty thousand, four hundred fifteen".

Divisors: 1 5 31 37 155 185 1147 2089 5735 10445 64759 77293 323795 386465 2396083 11980415