219142320 has 80 divisors (see below), whose sum is σ = 685655520. Its totient is φ = 57894912.

The previous prime is 219142307. The next prime is 219142331. The reversal of 219142320 is 23241912.

219142320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21972 + ... + 30348.

It is an arithmetic number, because the mean of its divisors is an integer number (8570694).

Almost surely, 2^219142320 is an apocalyptic number.

219142320 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 219142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342827760).

219142320 is an abundant number, since it is smaller than the sum of its proper divisors (466513200).

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

219142320 is a wasteful number, since it uses less digits than its factorization.

219142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502 (or 8496 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 219142320 is about 14803.4563531629. The cubic root of 219142320 is about 602.8955593039.

The spelling of 219142320 in words is "two hundred nineteen million, one hundred forty-two thousand, three hundred twenty".