19434 has 16 divisors (see below), whose sum is σ = 40320. Its totient is φ = 6240.

The previous prime is 19433. The next prime is 19441. The reversal of 19434 is 43491.

It is a plaindrome in base 11 and base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 19434.

It is not an unprimeable number, because it can be changed into a prime (19433) 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, 207 + ... + 285.

It is an arithmetic number, because the mean of its divisors is an integer number (2520).

2¹⁹⁴³⁴ is an apocalyptic number.

19434 is an abundant number, since it is smaller than the sum of its proper divisors (20886).

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 (20160).

19434 is a wasteful number, since it uses less digits than its factorization.

19434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125.

The product of its digits is 432, while the sum is 21.

The square root of 19434 is about 139.4058822288. The cubic root of 19434 is about 26.8856618955.

The spelling of 19434 in words is "nineteen thousand, four hundred thirty-four".