219730 has 32 divisors (see below), whose sum is σ = 468864. Its totient is φ = 72576.

The previous prime is 219727. The next prime is 219731. The reversal of 219730 is 37912.

219730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (219731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2974 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (14652).

2²¹⁹⁷³⁰ is an apocalyptic number.

219730 is an abundant number, since it is smaller than the sum of its proper divisors (249134).

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

219730 is a wasteful number, since it uses less digits than its factorization.

219730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 219730 is about 468.7536666523. The cubic root of 219730 is about 60.3434012142.

It can be divided in two parts, 219 and 730, that added together give a palindrome (949).

The spelling of 219730 in words is "two hundred nineteen thousand, seven hundred thirty".