205263340 has 24 divisors (see below), whose sum is σ = 431407872. Its totient is φ = 82037760.

The previous prime is 205263269. The next prime is 205263341. The reversal of 205263340 is 43362502.

It is a happy number.

205263340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205263341) 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, 25932 + ... + 32908.

It is an arithmetic number, because the mean of its divisors is an integer number (17975328).

Almost surely, 2^205263340 is an apocalyptic number.

205263340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205263340 is an abundant number, since it is smaller than the sum of its proper divisors (226144532).

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

205263340 is a wasteful number, since it uses less digits than its factorization.

205263340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457 (or 8455 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 205263340 is about 14327.0143435400. The cubic root of 205263340 is about 589.8892255882.

The spelling of 205263340 in words is "two hundred five million, two hundred sixty-three thousand, three hundred forty".