220239447424 has 32 divisors (see below), whose sum is σ = 452911775040. Its totient is φ = 106567472640.

The previous prime is 220239447403. The next prime is 220239447433. The reversal of 220239447424 is 424744932022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27747979 + ... + 27755914.

It is an arithmetic number, because the mean of its divisors is an integer number (14153492970).

Almost surely, 2^220239447424 is an apocalyptic number.

It is an amenable number.

220239447424 is an abundant number, since it is smaller than the sum of its proper divisors (232672327616).

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

220239447424 is an equidigital number, since it uses as much as digits as its factorization.

220239447424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55503938 (or 55503926 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 220239447424 in words is "two hundred twenty billion, two hundred thirty-nine million, four hundred forty-seven thousand, four hundred twenty-four".