180434 has 4 divisors (see below), whose sum is σ = 270654. Its totient is φ = 90216.

The previous prime is 180419. The next prime is 180437. The reversal of 180434 is 434081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 60025 = 347^2 + 245^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (180437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45107 + ... + 45110.

2¹⁸⁰⁴³⁴ is an apocalyptic number.

180434 is a deficient number, since it is larger than the sum of its proper divisors (90220).

180434 is an equidigital number, since it uses as much as digits as its factorization.

180434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90219.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 180434 is about 424.7752346830. The cubic root of 180434 is about 56.5075041590.

The spelling of 180434 in words is "one hundred eighty thousand, four hundred thirty-four".