80154 has 24 divisors (see below), whose sum is σ = 178932. Its totient is φ = 25920.
The previous prime is 80153. The next prime is 80167. The reversal of 80154 is 45108.
80154 is nontrivially palindromic in base 8.
It can be written as a sum of positive squares in 2 ways, for example, as 74529 + 5625 = 273^2 + 75^2 .
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 (80153) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062 + ... + 1134.
280154 is an apocalyptic number.
80154 is an abundant number, since it is smaller than the sum of its proper divisors (98778).
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 (89466).
80154 is a wasteful number, since it uses less digits than its factorization.
80154 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 142 (or 139 counting only the distinct ones).
The product of its (nonzero) digits is 160, while the sum is 18.
The square root of 80154 is about 283.1148176977. The cubic root of 80154 is about 43.1163246569.
The spelling of 80154 in words is "eighty thousand, one hundred fifty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.029 sec. • engine limits •