223004240 has 20 divisors (see below), whose sum is σ = 518485044. Its totient is φ = 89201664.

The previous prime is 223004209. The next prime is 223004323. The reversal of 223004240 is 42400322.

It can be written as a sum of positive squares in 2 ways, for example, as 170354704 + 52649536 = 13052^2 + 7256^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393697 + ... + 1393856.

Almost surely, 2^223004240 is an apocalyptic number.

223004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223004240 is an abundant number, since it is smaller than the sum of its proper divisors (295480804).

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

223004240 is a wasteful number, since it uses less digits than its factorization.

223004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787566 (or 2787560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 223004240 is about 14933.3264880937. The cubic root of 223004240 is about 606.4165427594.

Adding to 223004240 its reverse (42400322), we get a palindrome (265404562).

The spelling of 223004240 in words is "two hundred twenty-three million, four thousand, two hundred forty".