206136424 has 32 divisors (see below), whose sum is σ = 440725320. Its totient is φ = 89542656.

The previous prime is 206136353. The next prime is 206136433. The reversal of 206136424 is 424631602.

It can be written as a sum of positive squares in 4 ways, for example, as 141848100 + 64288324 = 11910^2 + 8018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 206136392 and 206136401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56529 + ... + 60064.

Almost surely, 2^206136424 is an apocalyptic number.

It is an amenable number.

206136424 is an abundant number, since it is smaller than the sum of its proper divisors (234588896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206136424 is a wasteful number, since it uses less digits than its factorization.

206136424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116629 (or 116625 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 206136424 is about 14357.4518630570. The cubic root of 206136424 is about 590.7244037091.

The spelling of 206136424 in words is "two hundred six million, one hundred thirty-six thousand, four hundred twenty-four".