233520945 has 16 divisors (see below), whose sum is σ = 427009920. Its totient is φ = 106752384.

The previous prime is 233520907. The next prime is 233520961. The reversal of 233520945 is 549025332.

It is not a de Polignac number, because 233520945 - 2⁹ = 233520433 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111900 + ... + 1112109.

It is an arithmetic number, because the mean of its divisors is an integer number (26688120).

Almost surely, 2^233520945 is an apocalyptic number.

It is an amenable number.

233520945 is a deficient number, since it is larger than the sum of its proper divisors (193488975).

233520945 is a wasteful number, since it uses less digits than its factorization.

233520945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224024.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 233520945 is about 15281.3921159036. The cubic root of 233520945 is about 615.8032072576.

The spelling of 233520945 in words is "two hundred thirty-three million, five hundred twenty thousand, nine hundred forty-five".