206495220 has 24 divisors (see below), whose sum is σ = 578186784. Its totient is φ = 55065376.

The previous prime is 206495171. The next prime is 206495251. The reversal of 206495220 is 22594602.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720734 + ... + 1720853.

It is an arithmetic number, because the mean of its divisors is an integer number (24091116).

Almost surely, 2^206495220 is an apocalyptic number.

206495220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206495220 is an abundant number, since it is smaller than the sum of its proper divisors (371691564).

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

206495220 is a wasteful number, since it uses less digits than its factorization.

206495220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441599 (or 3441597 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 206495220 is about 14369.9415447663. The cubic root of 206495220 is about 591.0669385159.

The spelling of 206495220 in words is "two hundred six million, four hundred ninety-five thousand, two hundred twenty".