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80406 = 2331489
BaseRepresentation
bin10011101000010110
311002022000
4103220112
510033111
61420130
7453264
oct235026
9132260
1080406
1155457
123a646
132a7a1
1421434
1518c56
hex13a16

80406 has 16 divisors (see below), whose sum is σ = 178800. Its totient is φ = 26784.

The previous prime is 80387. The next prime is 80407. The reversal of 80406 is 60408.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80407) 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, 691 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (11175).

280406 is an apocalyptic number.

80406 is an abundant number, since it is smaller than the sum of its proper divisors (98394).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89400).

80406 is a wasteful number, since it uses less digits than its factorization.

80406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 80406 is about 283.5595175620. The cubic root of 80406 is about 43.1614625457.

The spelling of 80406 in words is "eighty thousand, four hundred six".

Divisors: 1 2 3 6 9 18 27 54 1489 2978 4467 8934 13401 26802 40203 80406