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80427 = 3171983
BaseRepresentation
bin10011101000101011
311002022210
4103220223
510033202
61420203
7453324
oct235053
9132283
1080427
1155476
123a663
132a7b9
142144b
1518c6c
hex13a2b

80427 has 16 divisors (see below), whose sum is σ = 120960. Its totient is φ = 47232.

The previous prime is 80407. The next prime is 80429. The reversal of 80427 is 72408.

It is a happy number.

It is not a de Polignac number, because 80427 - 26 = 80363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 928 + ... + 1010.

It is an arithmetic number, because the mean of its divisors is an integer number (7560).

280427 is an apocalyptic number.

80427 is a deficient number, since it is larger than the sum of its proper divisors (40533).

80427 is a wasteful number, since it uses less digits than its factorization.

80427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 80427 is about 283.5965444077. The cubic root of 80427 is about 43.1652197770.

The spelling of 80427 in words is "eighty thousand, four hundred twenty-seven".

Divisors: 1 3 17 19 51 57 83 249 323 969 1411 1577 4233 4731 26809 80427