223430156 has 24 divisors (see below), whose sum is σ = 401639280. Its totient is φ = 108691200.

The previous prime is 223430153. The next prime is 223430171. The reversal of 223430156 is 651034322.

It is a super-2 number, since 2×223430156² = 99842069220368672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223430153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65411 + ... + 68741.

It is an arithmetic number, because the mean of its divisors is an integer number (16734970).

Almost surely, 2^223430156 is an apocalyptic number.

It is an amenable number.

223430156 is a deficient number, since it is larger than the sum of its proper divisors (178209124).

223430156 is a wasteful number, since it uses less digits than its factorization.

223430156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 223430156 is about 14947.5802724053. The cubic root of 223430156 is about 606.8023624060.

Adding to 223430156 its reverse (651034322), we get a palindrome (874464478).

The spelling of 223430156 in words is "two hundred twenty-three million, four hundred thirty thousand, one hundred fifty-six".