220455384 has 64 divisors (see below), whose sum is σ = 572160000. Its totient is φ = 70709760.

The previous prime is 220455383. The next prime is 220455397. The reversal of 220455384 is 483554022.

220455384 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220455383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147312 + ... + 148800.

It is an arithmetic number, because the mean of its divisors is an integer number (8940000).

Almost surely, 2^220455384 is an apocalyptic number.

220455384 is a gapful number since it is divisible by the number (24) 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 220455384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286080000).

220455384 is an abundant number, since it is smaller than the sum of its proper divisors (351704616).

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

220455384 is a wasteful number, since it uses less digits than its factorization.

220455384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 220455384 is about 14847.7400300517. The cubic root of 220455384 is about 604.0973119236.

The spelling of 220455384 in words is "two hundred twenty million, four hundred fifty-five thousand, three hundred eighty-four".