220765420 has 12 divisors (see below), whose sum is σ = 463607424. Its totient is φ = 88306160.

The previous prime is 220765411. The next prime is 220765423. The reversal of 220765420 is 24567022.

220765420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220765423) 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, 5519116 + ... + 5519155.

It is an arithmetic number, because the mean of its divisors is an integer number (38633952).

Almost surely, 2^220765420 is an apocalyptic number.

220765420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220765420 is an abundant number, since it is smaller than the sum of its proper divisors (242842004).

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

220765420 is a wasteful number, since it uses less digits than its factorization.

220765420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11038280 (or 11038278 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 220765420 is about 14858.1768733583. The cubic root of 220765420 is about 604.3803687193.

The spelling of 220765420 in words is "two hundred twenty million, seven hundred sixty-five thousand, four hundred twenty".