220432520 has 64 divisors (see below), whose sum is σ = 618364800. Its totient is φ = 68705280.

The previous prime is 220432517. The next prime is 220432543. The reversal of 220432520 is 25234022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220432492 and 220432501.

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, 32705 + ... + 38864.

It is an arithmetic number, because the mean of its divisors is an integer number (9661950).

Almost surely, 2^220432520 is an apocalyptic number.

220432520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220432520 is an abundant number, since it is smaller than the sum of its proper divisors (397932280).

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

220432520 is a wasteful number, since it uses less digits than its factorization.

220432520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71598 (or 71594 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 220432520 is about 14846.9700612617. The cubic root of 220432520 is about 604.0764270349.

Adding to 220432520 its reverse (25234022), we get a palindrome (245666542).

The spelling of 220432520 in words is "two hundred twenty million, four hundred thirty-two thousand, five hundred twenty".