206520000 has 140 divisors (see below), whose sum is σ = 683200056. Its totient is φ = 55040000.

The previous prime is 206519981. The next prime is 206520007. The reversal of 206520000 is 25602.

206520000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (206520007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119140 + ... + 120860.

Almost surely, 2^206520000 is an apocalyptic number.

206520000 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 206520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341600028).

206520000 is an abundant number, since it is smaller than the sum of its proper divisors (476680056).

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

206520000 is an equidigital number, since it uses as much as digits as its factorization.

206520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 206520000 is about 14370.8037353518. The cubic root of 206520000 is about 591.0905807950.

Adding to 206520000 its reverse (25602), we get a palindrome (206545602).

The spelling of 206520000 in words is "two hundred six million, five hundred twenty thousand".