234385428 has 24 divisors (see below), whose sum is σ = 558536832. Its totient is φ = 76465984.

The previous prime is 234385421. The next prime is 234385429. The reversal of 234385428 is 824583432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234385421) by changing a digit.

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, 207225 + ... + 208352.

It is an arithmetic number, because the mean of its divisors is an integer number (23272368).

Almost surely, 2^234385428 is an apocalyptic number.

It is an amenable number.

234385428 is an abundant number, since it is smaller than the sum of its proper divisors (324151404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234385428 is a wasteful number, since it uses less digits than its factorization.

234385428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415631 (or 415629 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 234385428 is about 15309.6514656605. The cubic root of 234385428 is about 616.5621625037.

The spelling of 234385428 in words is "two hundred thirty-four million, three hundred eighty-five thousand, four hundred twenty-eight".