223947424 has 12 divisors (see below), whose sum is σ = 440896554. Its totient is φ = 111973696.

The previous prime is 223947413. The next prime is 223947439. The reversal of 223947424 is 424749322.

It can be written as a sum of positive squares in only one way, i.e., 221057424 + 2890000 = 14868^2 + 1700^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499147 + ... + 3499210.

Almost surely, 2^223947424 is an apocalyptic number.

It is an amenable number.

223947424 is a deficient number, since it is larger than the sum of its proper divisors (216949130).

223947424 is an equidigital number, since it uses as much as digits as its factorization.

223947424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998367 (or 6998359 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 223947424 is about 14964.8730031364. The cubic root of 223947424 is about 607.2702752697.

The spelling of 223947424 in words is "two hundred twenty-three million, nine hundred forty-seven thousand, four hundred twenty-four".