206057378 has 4 divisors (see below), whose sum is σ = 309086070. Its totient is φ = 103028688.

The previous prime is 206057351. The next prime is 206057389. The reversal of 206057378 is 873750602.

It is a happy number.

206057378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 190081369 + 15976009 = 13787^2 + 3997^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51514343 + ... + 51514346.

Almost surely, 2^206057378 is an apocalyptic number.

206057378 is a deficient number, since it is larger than the sum of its proper divisors (103028692).

206057378 is a wasteful number, since it uses less digits than its factorization.

206057378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103028691.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 206057378 is about 14354.6988125840. The cubic root of 206057378 is about 590.6488867769.

The spelling of 206057378 in words is "two hundred six million, fifty-seven thousand, three hundred seventy-eight".