206123378 has 16 divisors (see below), whose sum is σ = 324959040. Its totient is φ = 97868496.

The previous prime is 206123369. The next prime is 206123383. The reversal of 206123378 is 873321602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9725 + ... + 22512.

It is an arithmetic number, because the mean of its divisors is an integer number (20309940).

Almost surely, 2^206123378 is an apocalyptic number.

206123378 is a deficient number, since it is larger than the sum of its proper divisors (118835662).

206123378 is a wasteful number, since it uses less digits than its factorization.

206123378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32401.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 206123378 is about 14356.9975273384. The cubic root of 206123378 is about 590.7119414878.

The spelling of 206123378 in words is "two hundred six million, one hundred twenty-three thousand, three hundred seventy-eight".