223023420 has 72 divisors (see below), whose sum is σ = 694809024. Its totient is φ = 57863808.

The previous prime is 223023389. The next prime is 223023421. The reversal of 223023420 is 24320322.

223023420 is a `hidden beast` number, since 22 + 302 + 342 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 223023393 and 223023402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223023421) 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 23 ways as a sum of consecutive naturals, for example, 10084 + ... + 23403.

Almost surely, 2^223023420 is an apocalyptic number.

223023420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223023420 is an abundant number, since it is smaller than the sum of its proper divisors (471785604).

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

223023420 is a wasteful number, since it uses less digits than its factorization.

223023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33539 (or 33534 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 223023420 is about 14933.9686620804. The cubic root of 223023420 is about 606.4339276843.

Adding to 223023420 its reverse (24320322), we get a palindrome (247343742).

The spelling of 223023420 in words is "two hundred twenty-three million, twenty-three thousand, four hundred twenty".