223440434 has 16 divisors (see below), whose sum is σ = 389534400. Its totient is φ = 94136784.

The previous prime is 223440431. The next prime is 223440439. The reversal of 223440434 is 434044322.

223440434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×223440434² = 99851255092216712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223440431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134429 + ... + 136080.

It is an arithmetic number, because the mean of its divisors is an integer number (24345900).

Almost surely, 2^223440434 is an apocalyptic number.

223440434 is a deficient number, since it is larger than the sum of its proper divisors (166093966).

223440434 is a wasteful number, since it uses less digits than its factorization.

223440434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270577.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 223440434 is about 14947.9240699169. The cubic root of 223440434 is about 606.8116667588.

Adding to 223440434 its reverse (434044322), we get a palindrome (657484756).

The spelling of 223440434 in words is "two hundred twenty-three million, four hundred forty thousand, four hundred thirty-four".