223020240 has 40 divisors (see below), whose sum is σ = 691363488. Its totient is φ = 59472000.

The previous prime is 223020211. The next prime is 223020247. The reversal of 223020240 is 42020322.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223020247) 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, 464386 + ... + 464865.

Almost surely, 2^223020240 is an apocalyptic number.

223020240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223020240 is an abundant number, since it is smaller than the sum of its proper divisors (468343248).

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

223020240 is a wasteful number, since it uses less digits than its factorization.

223020240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929267 (or 929261 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 223020240 is about 14933.8621930162. The cubic root of 223020240 is about 606.4310453726.

Adding to 223020240 its reverse (42020322), we get a palindrome (265040562).

The spelling of 223020240 in words is "two hundred twenty-three million, twenty thousand, two hundred forty".