220030520 has 64 divisors (see below), whose sum is σ = 505634400. Its totient is φ = 86156800.

The previous prime is 220030487. The next prime is 220030553. The reversal of 220030520 is 25030022.

220030520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220030487) and next prime (220030553).

It is a junction number, because it is equal to n+sod(n) for n = 220030495 and 220030504.

It is a congruent number.

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, 432026 + ... + 432534.

Almost surely, 2^220030520 is an apocalyptic number.

220030520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220030520 is an abundant number, since it is smaller than the sum of its proper divisors (285603880).

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

220030520 is a wasteful number, since it uses less digits than its factorization.

220030520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 220030520 is about 14833.4257675023. The cubic root of 220030520 is about 603.7089880653.

Adding to 220030520 its reverse (25030022), we get a palindrome (245060542).

The spelling of 220030520 in words is "two hundred twenty million, thirty thousand, five hundred twenty".