205446340 has 24 divisors (see below), whose sum is σ = 470659392. Its totient is φ = 74707680.

The previous prime is 205446299. The next prime is 205446349. The reversal of 205446340 is 43644502.

It is a junction number, because it is equal to n+sod(n) for n = 205446299 and 205446308.

It is not an unprimeable number, because it can be changed into a prime (205446349) 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, 466704 + ... + 467143.

It is an arithmetic number, because the mean of its divisors is an integer number (19610808).

Almost surely, 2^205446340 is an apocalyptic number.

205446340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205446340 is an abundant number, since it is smaller than the sum of its proper divisors (265213052).

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

205446340 is a wasteful number, since it uses less digits than its factorization.

205446340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933867 (or 933865 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 205446340 is about 14333.3994572118. The cubic root of 205446340 is about 590.0644763396.

The spelling of 205446340 in words is "two hundred five million, four hundred forty-six thousand, three hundred forty".