205541436 has 24 divisors (see below), whose sum is σ = 484081920. Its totient is φ = 67873072.

The previous prime is 205541423. The next prime is 205541437. The reversal of 205541436 is 634145502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205541437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78756 + ... + 81323.

It is an arithmetic number, because the mean of its divisors is an integer number (20170080).

Almost surely, 2^205541436 is an apocalyptic number.

It is an amenable number.

205541436 is an abundant number, since it is smaller than the sum of its proper divisors (278540484).

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

205541436 is a wasteful number, since it uses less digits than its factorization.

205541436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160193 (or 160191 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 205541436 is about 14336.7163604502. The cubic root of 205541436 is about 590.1555043520.

Adding to 205541436 its reverse (634145502), we get a palindrome (839686938).

The spelling of 205541436 in words is "two hundred five million, five hundred forty-one thousand, four hundred thirty-six".