206613240 has 64 divisors (see below), whose sum is σ = 656307360. Its totient is φ = 51855360.

The previous prime is 206613229. The next prime is 206613241. The reversal of 206613240 is 42316602.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 206613240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206613241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48601 + ... + 52680.

Almost surely, 2^206613240 is an apocalyptic number.

206613240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206613240 is an abundant number, since it is smaller than the sum of its proper divisors (449694120).

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

206613240 is a wasteful number, since it uses less digits than its factorization.

206613240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101312 (or 101308 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 206613240 is about 14374.0474467006. The cubic root of 206613240 is about 591.1795229372.

Adding to 206613240 its reverse (42316602), we get a palindrome (248929842).

The spelling of 206613240 in words is "two hundred six million, six hundred thirteen thousand, two hundred forty".