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803980 = 22561659
BaseRepresentation
bin11000100010010001100
31111211212001
43010102030
5201211410
625122044
76555652
oct3042214
91454761
10803980
114aa051
12329324
13221c38
1416cdd2
1510d33a
hexc448c

803980 has 24 divisors (see below), whose sum is σ = 1718640. Its totient is φ = 315840.

The previous prime is 803977. The next prime is 803987. The reversal of 803980 is 89308.

It is not an unprimeable number, because it can be changed into a prime (803987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (71610).

2803980 is an apocalyptic number.

It is an amenable number.

803980 is an abundant number, since it is smaller than the sum of its proper divisors (914660).

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

803980 is a wasteful number, since it uses less digits than its factorization.

803980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 803980 is about 896.6493182956. The cubic root of 803980 is about 92.9854681113.

The spelling of 803980 in words is "eight hundred three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 659 1220 1318 2636 3295 6590 13180 40199 80398 160796 200995 401990 803980