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11630980 = 225581549
BaseRepresentation
bin101100010111…
…100110000100
3210212220201001
4230113212010
510434142410
61053143044
7200601364
oct54274604
923786631
1011630980
116624589
123a8aa84
13254304a
14178a9a4
15104b33a
hexb17984

11630980 has 12 divisors (see below), whose sum is σ = 24425100. Its totient is φ = 4652384.

The previous prime is 11630947. The next prime is 11630989. The reversal of 11630980 is 8903611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 8561476 = 1752^2 + 2926^2 .

It is not an unprimeable number, because it can be changed into a prime (11630989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290755 + ... + 290794.

It is an arithmetic number, because the mean of its divisors is an integer number (2035425).

Almost surely, 211630980 is an apocalyptic number.

11630980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11630980 is an abundant number, since it is smaller than the sum of its proper divisors (12794120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11630980 is a wasteful number, since it uses less digits than its factorization.

11630980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581558 (or 581556 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 11630980 is about 3410.4222612457. The cubic root of 11630980 is about 226.5715816098.

The spelling of 11630980 in words is "eleven million, six hundred thirty thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 581549 1163098 2326196 2907745 5815490 11630980