234205520 has 80 divisors (see below), whose sum is σ = 563452032. Its totient is φ = 90478080.

The previous prime is 234205519. The next prime is 234205529. The reversal of 234205520 is 25502432.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234205529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353990 + ... + 354650.

Almost surely, 2^234205520 is an apocalyptic number.

234205520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234205520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281726016).

234205520 is an abundant number, since it is smaller than the sum of its proper divisors (329246512).

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

234205520 is a wasteful number, since it uses less digits than its factorization.

234205520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 234205520 is about 15303.7746977666. The cubic root of 234205520 is about 616.4043699033.

Adding to 234205520 its reverse (25502432), we get a palindrome (259707952).

The spelling of 234205520 in words is "two hundred thirty-four million, two hundred five thousand, five hundred twenty".