223240 has 16 divisors (see below), whose sum is σ = 502380. Its totient is φ = 89280.

The previous prime is 223229. The next prime is 223241. The reversal of 223240 is 42322.

It can be written as a sum of positive squares in 2 ways, for example, as 217156 + 6084 = 466^2 + 78^2 .

It is a super-3 number, since 3×223240³ = 33376231284672000, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223240.

It is not an unprimeable number, because it can be changed into a prime (223241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751 + ... + 2830.

2²²³²⁴⁰ is an apocalyptic number.

223240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223240 is an abundant number, since it is smaller than the sum of its proper divisors (279140).

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

223240 is a wasteful number, since it uses less digits than its factorization.

223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5588 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 223240 is about 472.4828039199. The cubic root of 223240 is about 60.6630168610.

Adding to 223240 its reverse (42322), we get a palindrome (265562).

The spelling of 223240 in words is "two hundred twenty-three thousand, two hundred forty", and thus it is an iban number.