206478238 has 16 divisors (see below), whose sum is σ = 317473344. Its totient is φ = 100670080.

The previous prime is 206478227. The next prime is 206478269. The reversal of 206478238 is 832874602.

It is a self number, because there is not a number n which added to its sum of digits gives 206478238.

It is a congruent 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, 22506 + ... + 30322.

It is an arithmetic number, because the mean of its divisors is an integer number (19842084).

Almost surely, 2^206478238 is an apocalyptic number.

206478238 is a deficient number, since it is larger than the sum of its proper divisors (110995106).

206478238 is a wasteful number, since it uses less digits than its factorization.

206478238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8147.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 206478238 is about 14369.3506464280. The cubic root of 206478238 is about 591.0507351159.

The spelling of 206478238 in words is "two hundred six million, four hundred seventy-eight thousand, two hundred thirty-eight".