223420726 has 32 divisors (see below), whose sum is σ = 355269600. Its totient is φ = 105235200.

The previous prime is 223420663. The next prime is 223420777. The reversal of 223420726 is 627024322.

It is a junction number, because it is equal to n+sod(n) for n = 223420694 and 223420703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640000 + ... + 640348.

It is an arithmetic number, because the mean of its divisors is an integer number (11102175).

Almost surely, 2^223420726 is an apocalyptic number.

223420726 is a deficient number, since it is larger than the sum of its proper divisors (131848874).

223420726 is a wasteful number, since it uses less digits than its factorization.

223420726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 223420726 is about 14947.2648334068. The cubic root of 223420726 is about 606.7938254700.

The spelling of 223420726 in words is "two hundred twenty-three million, four hundred twenty thousand, seven hundred twenty-six".