233428657 has 16 divisors (see below), whose sum is σ = 294037632. Its totient is φ = 180011520.

The previous prime is 233428651. The next prime is 233428673. The reversal of 233428657 is 756824332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233428657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (233428651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8158 + ... + 23095.

It is an arithmetic number, because the mean of its divisors is an integer number (18377352).

Almost surely, 2^233428657 is an apocalyptic number.

It is an amenable number.

233428657 is a deficient number, since it is larger than the sum of its proper divisors (60608975).

233428657 is a wasteful number, since it uses less digits than its factorization.

233428657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31368.

The product of its digits is 241920, while the sum is 40.

The square root of 233428657 is about 15278.3721973252. The cubic root of 233428657 is about 615.7220743002.

The spelling of 233428657 in words is "two hundred thirty-three million, four hundred twenty-eight thousand, six hundred fifty-seven".