223023520 has 48 divisors (see below), whose sum is σ = 554631840. Its totient is φ = 84513024.

The previous prime is 223023491. The next prime is 223023529. The reversal of 223023520 is 25320322.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (223023529) 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, 33642 + ... + 39721.

It is an arithmetic number, because the mean of its divisors is an integer number (11554830).

Almost surely, 2^223023520 is an apocalyptic number.

223023520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223023520 is an abundant number, since it is smaller than the sum of its proper divisors (331608320).

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

223023520 is a wasteful number, since it uses less digits than its factorization.

223023520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73397 (or 73389 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 223023520 is about 14933.9720101519. The cubic root of 223023520 is about 606.4340183226.

Adding to 223023520 its reverse (25320322), we get a palindrome (248343842).

The spelling of 223023520 in words is "two hundred twenty-three million, twenty-three thousand, five hundred twenty".