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80838 = 234499
BaseRepresentation
bin10011101111000110
311002220000
4103233012
510041323
61422130
7454452
oct235706
9132800
1080838
115580a
123a946
132aa44
1421662
1518e43
hex13bc6

80838 has 20 divisors (see below), whose sum is σ = 181500. Its totient is φ = 26892.

The previous prime is 80833. The next prime is 80849. The reversal of 80838 is 83808.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80831) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 88 + ... + 411.

It is an arithmetic number, because the mean of its divisors is an integer number (9075).

280838 is an apocalyptic number.

80838 is an abundant number, since it is smaller than the sum of its proper divisors (100662).

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

80838 is a wasteful number, since it uses less digits than its factorization.

80838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 80838 is about 284.3202419808. The cubic root of 80838 is about 43.2386228664.

The spelling of 80838 in words is "eighty thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 81 162 499 998 1497 2994 4491 8982 13473 26946 40419 80838