205433440 has 48 divisors (see below), whose sum is σ = 513892512. Its totient is φ = 77338624.

The previous prime is 205433429. The next prime is 205433443. The reversal of 205433440 is 44334502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205433443) by changing a digit.

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, 35044 + ... + 40483.

It is an arithmetic number, because the mean of its divisors is an integer number (10706094).

Almost surely, 2^205433440 is an apocalyptic number.

205433440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205433440 is an abundant number, since it is smaller than the sum of its proper divisors (308459072).

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

205433440 is a wasteful number, since it uses less digits than its factorization.

205433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75559 (or 75551 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 205433440 is about 14332.9494522237. The cubic root of 205433440 is about 590.0521260084.

Adding to 205433440 its reverse (44334502), we get a palindrome (249767942).

The spelling of 205433440 in words is "two hundred five million, four hundred thirty-three thousand, four hundred forty".