222720000 has 260 divisors, whose sum is σ = 767660520. Its totient is φ = 57344000.

The previous prime is 222719999. The next prime is 222720011. The reversal of 222720000 is 27222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7679986 + ... + 7680014.

Almost surely, 2^222720000 is an apocalyptic number.

222720000 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 222720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383830260).

222720000 is an abundant number, since it is smaller than the sum of its proper divisors (544940520).

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

222720000 is an frugal number, since it uses more digits than its factorization.

222720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 222720000 is about 14923.8064849421. The cubic root of 222720000 is about 606.1587881340.

Adding to 222720000 its reverse (27222), we get a palindrome (222747222).

The spelling of 222720000 in words is "two hundred twenty-two million, seven hundred twenty thousand".