205298380 has 24 divisors (see below), whose sum is σ = 492716448. Its totient is φ = 70387968.

The previous prime is 205298377. The next prime is 205298407. The reversal of 205298380 is 83892502.

205298380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733069 + ... + 733348.

It is an arithmetic number, because the mean of its divisors is an integer number (20529852).

Almost surely, 2^205298380 is an apocalyptic number.

205298380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205298380 is an abundant number, since it is smaller than the sum of its proper divisors (287418068).

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

205298380 is a wasteful number, since it uses less digits than its factorization.

205298380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466433 (or 1466431 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 205298380 is about 14328.2371560496. The cubic root of 205298380 is about 589.9227898581.

The spelling of 205298380 in words is "two hundred five million, two hundred ninety-eight thousand, three hundred eighty".