222446420 has 24 divisors (see below), whose sum is σ = 533871744. Its totient is φ = 76267296.

The previous prime is 222446417. The next prime is 222446423. The reversal of 222446420 is 24644222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222446417) and next prime (222446423).

It is a self number, because there is not a number n which added to its sum of digits gives 222446420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222446423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794312 + ... + 794591.

It is an arithmetic number, because the mean of its divisors is an integer number (22244656).

Almost surely, 2^222446420 is an apocalyptic number.

222446420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222446420 is an abundant number, since it is smaller than the sum of its proper divisors (311425324).

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

222446420 is a wasteful number, since it uses less digits than its factorization.

222446420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588919 (or 1588917 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 222446420 is about 14914.6377763592. The cubic root of 222446420 is about 605.9104930125.

It can be divided in two parts, 22 and 2446420, that added together give a palindrome (2446442).

The spelling of 222446420 in words is "two hundred twenty-two million, four hundred forty-six thousand, four hundred twenty".