223444420 has 24 divisors (see below), whose sum is σ = 485415000. Its totient is φ = 86295552.

The previous prime is 223444409. The next prime is 223444453. The reversal of 223444420 is 24444322.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 223382916 = 248^2 + 14946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192045 + ... + 193204.

It is an arithmetic number, because the mean of its divisors is an integer number (20225625).

Almost surely, 2^223444420 is an apocalyptic number.

223444420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223444420 is an abundant number, since it is smaller than the sum of its proper divisors (261970580).

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

223444420 is a wasteful number, since it uses less digits than its factorization.

223444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385287 (or 385285 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 223444420 is about 14948.0573988729. The cubic root of 223444420 is about 606.8152750836.

Adding to 223444420 its reverse (24444322), we get a palindrome (247888742).

The spelling of 223444420 in words is "two hundred twenty-three million, four hundred forty-four thousand, four hundred twenty".