206180380 has 48 divisors (see below), whose sum is σ = 510806016. Its totient is φ = 68408640.

The previous prime is 206180363. The next prime is 206180393. The reversal of 206180380 is 83081602.

206180380 is digitally balanced in base 3, 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 (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19414 + ... + 28093.

It is an arithmetic number, because the mean of its divisors is an integer number (10641792).

Almost surely, 2^206180380 is an apocalyptic number.

206180380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206180380 is an abundant number, since it is smaller than the sum of its proper divisors (304625636).

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

206180380 is a wasteful number, since it uses less digits than its factorization.

206180380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47554 (or 47552 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 206180380 is about 14358.9825544848. The cubic root of 206180380 is about 590.7663889083.

The spelling of 206180380 in words is "two hundred six million, one hundred eighty thousand, three hundred eighty".