206040004 has 12 divisors (see below), whose sum is σ = 368955664. Its totient is φ = 100624104.

The previous prime is 206039969. The next prime is 206040007. The reversal of 206040004 is 400040602.

It is a self number, because there is not a number n which added to its sum of digits gives 206040004.

It is not an unprimeable number, because it can be changed into a prime (206040007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598782 + ... + 599125.

Almost surely, 2^206040004 is an apocalyptic number.

It is an amenable number.

206040004 is a deficient number, since it is larger than the sum of its proper divisors (162915660).

206040004 is a wasteful number, since it uses less digits than its factorization.

206040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197954 (or 1197952 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 206040004 is about 14354.0936321316. The cubic root of 206040004 is about 590.6322858633.

Adding to 206040004 its reverse (400040602), we get a palindrome (606080606).

The spelling of 206040004 in words is "two hundred six million, forty thousand, four".