205148540 has 24 divisors (see below), whose sum is σ = 433461840. Its totient is φ = 81554688.

The previous prime is 205148533. The next prime is 205148557. The reversal of 205148540 is 45841502.

205148540 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28205 + ... + 34724.

It is an arithmetic number, because the mean of its divisors is an integer number (18060910).

Almost surely, 2^205148540 is an apocalyptic number.

205148540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205148540 is an abundant number, since it is smaller than the sum of its proper divisors (228313300).

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

205148540 is a wasteful number, since it uses less digits than its factorization.

205148540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63101 (or 63099 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 205148540 is about 14323.0073657734. The cubic root of 205148540 is about 589.7792336923.

The spelling of 205148540 in words is "two hundred five million, one hundred forty-eight thousand, five hundred forty".