205379860 has 24 divisors (see below), whose sum is σ = 492912000. Its totient is φ = 70415904.

The previous prime is 205379849. The next prime is 205379861. The reversal of 205379860 is 68973502.

205379860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205379861) 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, 733360 + ... + 733639.

It is an arithmetic number, because the mean of its divisors is an integer number (20538000).

Almost surely, 2^205379860 is an apocalyptic number.

205379860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205379860 is an abundant number, since it is smaller than the sum of its proper divisors (287532140).

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

205379860 is a wasteful number, since it uses less digits than its factorization.

205379860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467015 (or 1467013 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 205379860 is about 14331.0802105075. The cubic root of 205379860 is about 590.0008235170. Note that the first 3 decimals are identical.

The spelling of 205379860 in words is "two hundred five million, three hundred seventy-nine thousand, eight hundred sixty".