220232240 has 80 divisors (see below), whose sum is σ = 531730848. Its totient is φ = 84768768.

The previous prime is 220232227. The next prime is 220232267. The reversal of 220232240 is 42232022.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250682 + ... + 251558.

Almost surely, 2^220232240 is an apocalyptic number.

220232240 is a gapful number since it is divisible by the number (20) 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 220232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265865424).

220232240 is an abundant number, since it is smaller than the sum of its proper divisors (311498608).

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

220232240 is a wasteful number, since it uses less digits than its factorization.

220232240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 220232240 is about 14840.2237179902. The cubic root of 220232240 is about 603.8934215411.

Adding to 220232240 its reverse (42232022), we get a palindrome (262464262).

The spelling of 220232240 in words is "two hundred twenty million, two hundred thirty-two thousand, two hundred forty".