222344028 has 144 divisors (see below), whose sum is σ = 618369024. Its totient is φ = 69750720.

The previous prime is 222344009. The next prime is 222344029. The reversal of 222344028 is 820443222.

222344028 is a `hidden beast` number, since 22 + 234 + 402 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 222343992 and 222344010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222344029) 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 47 ways as a sum of consecutive naturals, for example, 1416126 + ... + 1416282.

Almost surely, 2^222344028 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 222344028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309184512).

222344028 is an abundant number, since it is smaller than the sum of its proper divisors (396024996).

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

222344028 is a wasteful number, since it uses less digits than its factorization.

222344028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 222344028 is about 14911.2047802986. The cubic root of 222344028 is about 605.8175119571.

It can be divided in two parts, 22234 and 4028, that added together give a palindrome (26262).

The spelling of 222344028 in words is "two hundred twenty-two million, three hundred forty-four thousand, twenty-eight".