233533420 has 24 divisors (see below), whose sum is σ = 519269184. Its totient is φ = 87918336.

The previous prime is 233533411. The next prime is 233533441. The reversal of 233533420 is 24335332.

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, 343092 + ... + 343771.

It is an arithmetic number, because the mean of its divisors is an integer number (21636216).

Almost surely, 2^233533420 is an apocalyptic number.

233533420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233533420 is an abundant number, since it is smaller than the sum of its proper divisors (285735764).

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

233533420 is a wasteful number, since it uses less digits than its factorization.

233533420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686889 (or 686887 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 25.

The square root of 233533420 is about 15281.8002866154. The cubic root of 233533420 is about 615.8141727383.

Adding to 233533420 its reverse (24335332), we get a palindrome (257868752).

The spelling of 233533420 in words is "two hundred thirty-three million, five hundred thirty-three thousand, four hundred twenty".