223240420 has 48 divisors (see below), whose sum is σ = 505971648. Its totient is φ = 82247040.

The previous prime is 223240417. The next prime is 223240441. The reversal of 223240420 is 24042322.

It is a super-3 number, since 3×223240420³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 204075 + ... + 205165.

It is an arithmetic number, because the mean of its divisors is an integer number (10541076).

Almost surely, 2^223240420 is an apocalyptic number.

223240420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223240420 is an abundant number, since it is smaller than the sum of its proper divisors (282731228).

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

223240420 is a wasteful number, since it uses less digits than its factorization.

223240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 223240420 is about 14941.2322115681. The cubic root of 223240420 is about 606.6305490446.

Adding to 223240420 its reverse (24042322), we get a palindrome (247282742).

The spelling of 223240420 in words is "two hundred twenty-three million, two hundred forty thousand, four hundred twenty".