233017728 has 64 divisors (see below), whose sum is σ = 632171520. Its totient is φ = 76014080.

The previous prime is 233017721. The next prime is 233017739. The reversal of 233017728 is 827710332.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233017721) 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, 11593 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (9877680).

Almost surely, 2^233017728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 233017728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316085760).

233017728 is an abundant number, since it is smaller than the sum of its proper divisors (399153792).

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

233017728 is a wasteful number, since it uses less digits than its factorization.

233017728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12975 (or 12963 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 233017728 is about 15264.9182113760. The cubic root of 233017728 is about 615.3605553157.

The spelling of 233017728 in words is "two hundred thirty-three million, seventeen thousand, seven hundred twenty-eight".