206742180 has 24 divisors (see below), whose sum is σ = 578878272. Its totient is φ = 55131232.

The previous prime is 206742169. The next prime is 206742203. The reversal of 206742180 is 81247602.

206742180 is digitally balanced in base 3 and base 9, because in such bases 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 (30).

206742180 is strictly pandigital in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722792 + ... + 1722911.

It is an arithmetic number, because the mean of its divisors is an integer number (24119928).

Almost surely, 2^206742180 is an apocalyptic number.

206742180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206742180 is an abundant number, since it is smaller than the sum of its proper divisors (372136092).

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

206742180 is a wasteful number, since it uses less digits than its factorization.

206742180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445715 (or 3445713 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 206742180 is about 14378.5319139334. The cubic root of 206742180 is about 591.3024754263.

Adding to 206742180 its reverse (81247602), we get a palindrome (287989782).

The spelling of 206742180 in words is "two hundred six million, seven hundred forty-two thousand, one hundred eighty".