219430000 has 50 divisors (see below), whose sum is σ = 531286184. Its totient is φ = 87768000.

The previous prime is 219429967. The next prime is 219430019. The reversal of 219430000 is 34912.

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 219430000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 972 + ... + 20971.

Almost surely, 2^219430000 is an apocalyptic number.

219430000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265643092).

219430000 is an abundant number, since it is smaller than the sum of its proper divisors (311856184).

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

219430000 is an equidigital number, since it uses as much as digits as its factorization.

219430000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21971 (or 21950 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 219430000 is about 14813.1698160792. The cubic root of 219430000 is about 603.1592618370.

Adding to 219430000 its reverse (34912), we get a palindrome (219464912).

The spelling of 219430000 in words is "two hundred nineteen million, four hundred thirty thousand".