233664528 has 20 divisors (see below), whose sum is σ = 603633488. Its totient is φ = 77888160.

The previous prime is 233664523. The next prime is 233664533. The reversal of 233664528 is 825466332.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (233664523) and next prime (233664533).

It is a super-2 number, since 2×233664528² = 109198223290925568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (233664523) 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 3 ways as a sum of consecutive naturals, for example, 2433958 + ... + 2434053.

Almost surely, 2^233664528 is an apocalyptic number.

It is an amenable number.

233664528 is an abundant number, since it is smaller than the sum of its proper divisors (369968960).

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

233664528 is a wasteful number, since it uses less digits than its factorization.

233664528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868022 (or 4868016 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 233664528 is about 15286.0893625544. The cubic root of 233664528 is about 615.9293925930.

The spelling of 233664528 in words is "two hundred thirty-three million, six hundred sixty-four thousand, five hundred twenty-eight".