223023730 has 16 divisors (see below), whose sum is σ = 401612760. Its totient is φ = 89171712.

The previous prime is 223023727. The next prime is 223023743. The reversal of 223023730 is 37320322.

It can be written as a sum of positive squares in 4 ways, for example, as 77845329 + 145178401 = 8823^2 + 12049^2 .

It is a super-2 number, since 2×223023730² = 99479168286225800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44176 + ... + 48964.

Almost surely, 2^223023730 is an apocalyptic number.

223023730 is a deficient number, since it is larger than the sum of its proper divisors (178589030).

223023730 is a wasteful number, since it uses less digits than its factorization.

223023730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453.

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 223023730 is about 14933.9790410995. The cubic root of 223023730 is about 606.4342086629.

The spelling of 223023730 in words is "two hundred twenty-three million, twenty-three thousand, seven hundred thirty".