1228004224 has 64 divisors (see below), whose sum is σ = 2561220000. Its totient is φ = 585367552.

The previous prime is 1228004221. The next prime is 1228004233. The reversal of 1228004224 is 4224008221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228004221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321392 + ... + 1322320.

Almost surely, 2^1228004224 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 1228004224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280610000).

1228004224 is an abundant number, since it is smaller than the sum of its proper divisors (1333215776).

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

1228004224 is an equidigital number, since it uses as much as digits as its factorization.

1228004224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 1228004224 is about 35042.8912049220. The cubic root of 1228004224 is about 1070.8614554988.

The spelling of 1228004224 in words is "one billion, two hundred twenty-eight million, four thousand, two hundred twenty-four".