205103040 has 56 divisors (see below), whose sum is σ = 651205200. Its totient is φ = 54693888.

The previous prime is 205103027. The next prime is 205103047. The reversal of 205103040 is 40301502.

205103040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205103047) 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, 105865 + ... + 107784.

Almost surely, 2^205103040 is an apocalyptic number.

205103040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205103040 is an abundant number, since it is smaller than the sum of its proper divisors (446102160).

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

205103040 is a wasteful number, since it uses less digits than its factorization.

205103040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213669 (or 213659 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 205103040 is about 14321.4189241150. The cubic root of 205103040 is about 589.7356279887.

Adding to 205103040 its reverse (40301502), we get a palindrome (245404542).

The spelling of 205103040 in words is "two hundred five million, one hundred three thousand, forty".