233918420 has 24 divisors (see below), whose sum is σ = 491624448. Its totient is φ = 93492000.

The previous prime is 233918417. The next prime is 233918429. The reversal of 233918420 is 24819332.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233918429) 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 7 ways as a sum of consecutive naturals, for example, 25445 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (20484352).

Almost surely, 2^233918420 is an apocalyptic number.

233918420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233918420 is an abundant number, since it is smaller than the sum of its proper divisors (257706028).

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

233918420 is a wasteful number, since it uses less digits than its factorization.

233918420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9431 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 233918420 is about 15294.3917826110. The cubic root of 233918420 is about 616.1523945493.

The spelling of 233918420 in words is "two hundred thirty-three million, nine hundred eighteen thousand, four hundred twenty".