219385530 has 128 divisors (see below), whose sum is σ = 720115200. Its totient is φ = 46282752.

The previous prime is 219385511. The next prime is 219385549. The reversal of 219385530 is 35583912.

It is an interprime number because it is at equal distance from previous prime (219385511) and next prime (219385549).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20106 + ... + 29034.

It is an arithmetic number, because the mean of its divisors is an integer number (5625900).

Almost surely, 2^219385530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219385530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360057600).

219385530 is an abundant number, since it is smaller than the sum of its proper divisors (500729670).

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

219385530 is a wasteful number, since it uses less digits than its factorization.

219385530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965 (or 8959 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 219385530 is about 14811.6687108509. The cubic root of 219385530 is about 603.1185133758.

The spelling of 219385530 in words is "two hundred nineteen million, three hundred eighty-five thousand, five hundred thirty".