233136128 has 56 divisors (see below), whose sum is σ = 471830400. Its totient is φ = 115179520.

The previous prime is 233136109. The next prime is 233136131. The reversal of 233136128 is 821631332.

It is a self number, because there is not a number n which added to its sum of digits gives 233136128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220513 + ... + 1220703.

Almost surely, 2^233136128 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 233136128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235915200).

233136128 is an abundant number, since it is smaller than the sum of its proper divisors (238694272).

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

233136128 is an equidigital number, since it uses as much as digits as its factorization.

233136128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 342 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 233136128 is about 15268.7958922765. The cubic root of 233136128 is about 615.4647624843.

The spelling of 233136128 in words is "two hundred thirty-three million, one hundred thirty-six thousand, one hundred twenty-eight".