220653888 has 224 divisors, whose sum is σ = 732592896. Its totient is φ = 57065472.

The previous prime is 220653869. The next prime is 220653899. The reversal of 220653888 is 888356022.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275370 + ... + 1275542.

It is an arithmetic number, because the mean of its divisors is an integer number (3270504).

Almost surely, 2^220653888 is an apocalyptic number.

220653888 is a gapful number since it is divisible by the number (28) 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 220653888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366296448).

220653888 is an abundant number, since it is smaller than the sum of its proper divisors (511939008).

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

220653888 is a wasteful number, since it uses less digits than its factorization.

220653888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 220653888 is about 14854.4231796459. The cubic root of 220653888 is about 604.2785727254.

The spelling of 220653888 in words is "two hundred twenty million, six hundred fifty-three thousand, eight hundred eighty-eight".