224020644 has 48 divisors (see below), whose sum is σ = 560208768. Its totient is φ = 69493248.

The previous prime is 224020637. The next prime is 224020649. The reversal of 224020644 is 446020422.

It is not an unprimeable number, because it can be changed into a prime (224020649) 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, 757 + ... + 21180.

It is an arithmetic number, because the mean of its divisors is an integer number (11671016).

Almost surely, 2^224020644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224020644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280104384).

224020644 is an abundant number, since it is smaller than the sum of its proper divisors (336188124).

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

224020644 is a wasteful number, since it uses less digits than its factorization.

224020644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22004 (or 22002 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 224020644 is about 14967.3191988412. The cubic root of 224020644 is about 607.3364507493.

The spelling of 224020644 in words is "two hundred twenty-four million, twenty thousand, six hundred forty-four".