233820020 has 48 divisors (see below), whose sum is σ = 576347520. Its totient is φ = 77998464.

The previous prime is 233819959. The next prime is 233820031. The reversal of 233820020 is 20028332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 233819974 and 233820001.

It is a congruent 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, 17390 + ... + 27749.

It is an arithmetic number, because the mean of its divisors is an integer number (12007240).

Almost surely, 2^233820020 is an apocalyptic number.

233820020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233820020 is an abundant number, since it is smaller than the sum of its proper divisors (342527500).

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

233820020 is a wasteful number, since it uses less digits than its factorization.

233820020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45192 (or 45190 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 233820020 is about 15291.1745788216. The cubic root of 233820020 is about 616.0659856508.

Adding to 233820020 its reverse (20028332), we get a palindrome (253848352).

The spelling of 233820020 in words is "two hundred thirty-three million, eight hundred twenty thousand, twenty".