223542236 has 6 divisors (see below), whose sum is σ = 391198920. Its totient is φ = 111771116.

The previous prime is 223542203. The next prime is 223542259. The reversal of 223542236 is 632245322.

It is a super-2 number, since 2×223542236² = 99942262551759392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223542199 and 223542208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27942776 + ... + 27942783.

It is an arithmetic number, because the mean of its divisors is an integer number (65199820).

Almost surely, 2^223542236 is an apocalyptic number.

It is an amenable number.

223542236 is a deficient number, since it is larger than the sum of its proper divisors (167656684).

223542236 is a wasteful number, since it uses less digits than its factorization.

223542236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55885563 (or 55885561 counting only the distinct ones).

The product of its digits is 17280, while the sum is 29.

The square root of 223542236 is about 14951.3289041476. The cubic root of 223542236 is about 606.9038095294.

Adding to 223542236 its reverse (632245322), we get a palindrome (855787558).

The spelling of 223542236 in words is "two hundred twenty-three million, five hundred forty-two thousand, two hundred thirty-six".