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80825412 = 22317396203
BaseRepresentation
bin1001101000101…
…00110001000100
312122002100121210
410310110301010
5131142403122
612004211420
72001001413
oct464246104
9178070553
1080825412
1141695368
1223099b70
131398bcb5
14aa3d47a
15716840c
hex4d14c44

80825412 has 24 divisors (see below), whose sum is σ = 199686816. Its totient is φ = 25356928.

The previous prime is 80825389. The next prime is 80825413. The reversal of 80825412 is 21452808.

It is a self number, because there is not a number n which added to its sum of digits gives 80825412.

It is not an unprimeable number, because it can be changed into a prime (80825413) 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, 197898 + ... + 198305.

It is an arithmetic number, because the mean of its divisors is an integer number (8320284).

Almost surely, 280825412 is an apocalyptic number.

It is an amenable number.

80825412 is an abundant number, since it is smaller than the sum of its proper divisors (118861404).

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

80825412 is a wasteful number, since it uses less digits than its factorization.

80825412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396227 (or 396225 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 80825412 is about 8990.2954345227. The cubic root of 80825412 is about 432.3637839378.

The spelling of 80825412 in words is "eighty million, eight hundred twenty-five thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 396203 792406 1188609 1584812 2377218 4754436 6735451 13470902 20206353 26941804 40412706 80825412