233388945 has 80 divisors (see below), whose sum is σ = 434693952. Its totient is φ = 119733120.

The previous prime is 233388943. The next prime is 233388959. The reversal of 233388945 is 549883332.

It is not a de Polignac number, because 233388945 - 2¹ = 233388943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 233388945.

It is not an unprimeable number, because it can be changed into a prime (233388943) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1781530 + ... + 1781660.

Almost surely, 2^233388945 is an apocalyptic number.

It is an amenable number.

233388945 is a deficient number, since it is larger than the sum of its proper divisors (201305007).

233388945 is a wasteful number, since it uses less digits than its factorization.

233388945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 275 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 233388945 is about 15277.0725271565. The cubic root of 233388945 is about 615.6871557915.

The spelling of 233388945 in words is "two hundred thirty-three million, three hundred eighty-eight thousand, nine hundred forty-five".