222732720 has 160 divisors (see below), whose sum is σ = 876848640. Its totient is φ = 50906880.

The previous prime is 222732689. The next prime is 222732739. The reversal of 222732720 is 27237222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7755 + ... + 22485.

It is an arithmetic number, because the mean of its divisors is an integer number (5480304).

Almost surely, 2^222732720 is an apocalyptic number.

222732720 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 222732720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438424320).

222732720 is an abundant number, since it is smaller than the sum of its proper divisors (654115920).

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

222732720 is a wasteful number, since it uses less digits than its factorization.

222732720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14760 (or 14748 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 222732720 is about 14924.2326435901. The cubic root of 222732720 is about 606.1703275752.

Adding to 222732720 its reverse (27237222), we get a palindrome (249969942).

The spelling of 222732720 in words is "two hundred twenty-two million, seven hundred thirty-two thousand, seven hundred twenty".