220239924 has 12 divisors (see below), whose sum is σ = 513893184. Its totient is φ = 73413304.

The previous prime is 220239911. The next prime is 220239953. The reversal of 220239924 is 429932022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 9176652 + ... + 9176675.

It is an arithmetic number, because the mean of its divisors is an integer number (42824432).

Almost surely, 2^220239924 is an apocalyptic number.

It is an amenable number.

220239924 is an abundant number, since it is smaller than the sum of its proper divisors (293653260).

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

220239924 is a wasteful number, since it uses less digits than its factorization.

220239924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353334 (or 18353332 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 220239924 is about 14840.4826067079. The cubic root of 220239924 is about 603.9004448287.

The spelling of 220239924 in words is "two hundred twenty million, two hundred thirty-nine thousand, nine hundred twenty-four".