220304132520 has 128 divisors (see below), whose sum is σ = 682426736640. Its totient is φ = 56836465920.

The previous prime is 220304132501. The next prime is 220304132549. The reversal of 220304132520 is 25231403022.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18471279 + ... + 18483201.

It is an arithmetic number, because the mean of its divisors is an integer number (5331458880).

Almost surely, 2^220304132520 is an apocalyptic number.

220304132520 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 220304132520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341213368320).

220304132520 is an abundant number, since it is smaller than the sum of its proper divisors (462122604120).

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

220304132520 is a wasteful number, since it uses less digits than its factorization.

220304132520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935 (or 16931 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 220304132520 its reverse (25231403022), we get a palindrome (245535535542).

The spelling of 220304132520 in words is "two hundred twenty billion, three hundred four million, one hundred thirty-two thousand, five hundred twenty".