206231520 has 192 divisors, whose sum is σ = 716325120. Its totient is φ = 49459200.

The previous prime is 206231513. The next prime is 206231521. The reversal of 206231520 is 25132602.

206231520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206231521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733780 + ... + 734060.

It is an arithmetic number, because the mean of its divisors is an integer number (3730860).

Almost surely, 2^206231520 is an apocalyptic number.

206231520 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 206231520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358162560).

206231520 is an abundant number, since it is smaller than the sum of its proper divisors (510093600).

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

206231520 is a wasteful number, since it uses less digits than its factorization.

206231520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 206231520 is about 14360.7632109161. The cubic root of 206231520 is about 590.8152284982.

The spelling of 206231520 in words is "two hundred six million, two hundred thirty-one thousand, five hundred twenty".