233433640 has 32 divisors (see below), whose sum is σ = 572974560. Its totient is φ = 84884800.

The previous prime is 233433619. The next prime is 233433659. The reversal of 233433640 is 46334332.

It is a junction number, because it is equal to n+sod(n) for n = 233433599 and 233433608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264826 + ... + 265705.

It is an arithmetic number, because the mean of its divisors is an integer number (17905455).

Almost surely, 2^233433640 is an apocalyptic number.

233433640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233433640 is an abundant number, since it is smaller than the sum of its proper divisors (339540920).

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

233433640 is a wasteful number, since it uses less digits than its factorization.

233433640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530553 (or 530549 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

The square root of 233433640 is about 15278.5352701102. The cubic root of 233433640 is about 615.7264555407.

Adding to 233433640 its reverse (46334332), we get a palindrome (279767972).

The spelling of 233433640 in words is "two hundred thirty-three million, four hundred thirty-three thousand, six hundred forty".