233128536 has 16 divisors (see below), whose sum is σ = 582821400. Its totient is φ = 77709504.

The previous prime is 233128459. The next prime is 233128541. The reversal of 233128536 is 635821332.

It is a junction number, because it is equal to n+sod(n) for n = 233128497 and 233128506.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4856821 + ... + 4856868.

Almost surely, 2^233128536 is an apocalyptic number.

It is an amenable number.

233128536 is an abundant number, since it is smaller than the sum of its proper divisors (349692864).

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

233128536 is a wasteful number, since it uses less digits than its factorization.

233128536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713698 (or 9713694 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 233128536 is about 15268.5472786379. The cubic root of 233128536 is about 615.4580816105.

Adding to 233128536 its reverse (635821332), we get a palindrome (868949868).

The spelling of 233128536 in words is "two hundred thirty-three million, one hundred twenty-eight thousand, five hundred thirty-six".