206400052 has 24 divisors (see below), whose sum is σ = 366702336. Its totient is φ = 101639328.

The previous prime is 206400017. The next prime is 206400071. The reversal of 206400052 is 250004602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79893 + ... + 82435.

It is an arithmetic number, because the mean of its divisors is an integer number (15279264).

Almost surely, 2^206400052 is an apocalyptic number.

It is an amenable number.

206400052 is a deficient number, since it is larger than the sum of its proper divisors (160302284).

206400052 is a wasteful number, since it uses less digits than its factorization.

206400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 206400052 is about 14366.6298066039. The cubic root of 206400052 is about 590.9761223668.

Adding to 206400052 its reverse (250004602), we get a palindrome (456404654).

The spelling of 206400052 in words is "two hundred six million, four hundred thousand, fifty-two".