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80832980 = 22514812729
BaseRepresentation
bin1001101000101…
…10100111010100
312122002202000002
410310112213110
5131143123410
612004310432
72001032444
oct464264724
9178082002
1080832980
11416a0018
12230a2418
1313992587
14aa42124
15716a7a5
hex4d169d4

80832980 has 24 divisors (see below), whose sum is σ = 169926120. Its totient is φ = 32299520.

The previous prime is 80832979. The next prime is 80832989. The reversal of 80832980 is 8923808.

It can be written as a sum of positive squares in 4 ways, for example, as 24462916 + 56370064 = 4946^2 + 7508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80832989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28256 + ... + 30984.

It is an arithmetic number, because the mean of its divisors is an integer number (7080255).

Almost surely, 280832980 is an apocalyptic number.

It is an amenable number.

80832980 is an abundant number, since it is smaller than the sum of its proper divisors (89093140).

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

80832980 is a wasteful number, since it uses less digits than its factorization.

80832980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 80832980 is about 8990.7163229634. The cubic root of 80832980 is about 432.3772781550.

The spelling of 80832980 in words is "eighty million, eight hundred thirty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1481 2729 2962 5458 5924 7405 10916 13645 14810 27290 29620 54580 4041649 8083298 16166596 20208245 40416490 80832980