220245520 has 40 divisors (see below), whose sum is σ = 558624960. Its totient is φ = 80088960.

The previous prime is 220245503. The next prime is 220245533. The reversal of 220245520 is 25542022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 220245491 and 220245500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124260 + ... + 126019.

It is an arithmetic number, because the mean of its divisors is an integer number (13965624).

Almost surely, 2^220245520 is an apocalyptic number.

220245520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220245520 is an abundant number, since it is smaller than the sum of its proper divisors (338379440).

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

220245520 is a wasteful number, since it uses less digits than its factorization.

220245520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250303 (or 250297 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 220245520 is about 14840.6711438533. The cubic root of 220245520 is about 603.9055595511.

Adding to 220245520 its reverse (25542022), we get a palindrome (245787542).

The spelling of 220245520 in words is "two hundred twenty million, two hundred forty-five thousand, five hundred twenty".