206650920 has 256 divisors, whose sum is σ = 746380800. Its totient is φ = 44789760.

The previous prime is 206650907. The next prime is 206650921. The reversal of 206650920 is 29056602.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (206650921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1895826 + ... + 1895934.

It is an arithmetic number, because the mean of its divisors is an integer number (2915550).

Almost surely, 2^206650920 is an apocalyptic number.

206650920 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 206650920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373190400).

206650920 is an abundant number, since it is smaller than the sum of its proper divisors (539729880).

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

206650920 is a wasteful number, since it uses less digits than its factorization.

206650920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 206650920 is about 14375.3580824966. The cubic root of 206650920 is about 591.2154585020.

The spelling of 206650920 in words is "two hundred six million, six hundred fifty thousand, nine hundred twenty".