233145564 has 12 divisors (see below), whose sum is σ = 544006344. Its totient is φ = 77715184.

The previous prime is 233145559. The next prime is 233145593. The reversal of 233145564 is 465541332.

It is a tau number, because it is divible by the number of its divisors (12).

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, 9714387 + ... + 9714410.

It is an arithmetic number, because the mean of its divisors is an integer number (45333862).

Almost surely, 2^233145564 is an apocalyptic number.

It is an amenable number.

233145564 is an abundant number, since it is smaller than the sum of its proper divisors (310860780).

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

233145564 is a wasteful number, since it uses less digits than its factorization.

233145564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19428804 (or 19428802 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 233145564 is about 15269.1048853559. The cubic root of 233145564 is about 615.4730658551.

Adding to 233145564 its reverse (465541332), we get a palindrome (698686896).

It can be divided in two parts, 2331 and 45564, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 233145564 in words is "two hundred thirty-three million, one hundred forty-five thousand, five hundred sixty-four".