206820038 has 4 divisors (see below), whose sum is σ = 310230060. Its totient is φ = 103410018.

The previous prime is 206820013. The next prime is 206820043. The reversal of 206820038 is 830028602.

206820038 is digitally balanced in base 2, 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 is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51705008 + ... + 51705011.

It is an arithmetic number, because the mean of its divisors is an integer number (77557515).

Almost surely, 2^206820038 is an apocalyptic number.

206820038 is a deficient number, since it is larger than the sum of its proper divisors (103410022).

206820038 is a wasteful number, since it uses less digits than its factorization.

206820038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103410021.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 206820038 is about 14381.2390982140. The cubic root of 206820038 is about 591.3766932277.

The spelling of 206820038 in words is "two hundred six million, eight hundred twenty thousand, thirty-eight".