220415320 has 16 divisors (see below), whose sum is σ = 495934560. Its totient is φ = 88166112.

The previous prime is 220415309. The next prime is 220415329. The reversal of 220415320 is 23514022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220415329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755152 + ... + 2755231.

It is an arithmetic number, because the mean of its divisors is an integer number (30995910).

Almost surely, 2^220415320 is an apocalyptic number.

220415320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220415320 is an abundant number, since it is smaller than the sum of its proper divisors (275519240).

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

220415320 is a wasteful number, since it uses less digits than its factorization.

220415320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510394 (or 5510390 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220415320 is about 14846.3908071962. The cubic root of 220415320 is about 604.0607149177.

Adding to 220415320 its reverse (23514022), we get a palindrome (243929342).

The spelling of 220415320 in words is "two hundred twenty million, four hundred fifteen thousand, three hundred twenty".