10205000 has 80 divisors (see below), whose sum is σ = 25913580. Its totient is φ = 3744000.

The previous prime is 10204979. The next prime is 10205009. The reversal of 10205000 is 50201.

It can be written as a sum of positive squares in 10 ways, for example, as 3118756 + 7086244 = 1766^2 + 2662^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (10205009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64922 + ... + 65078.

Almost surely, 2^10205000 is an apocalyptic number.

10205000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10205000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12956790).

10205000 is an abundant number, since it is smaller than the sum of its proper divisors (15708580).

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

10205000 is a wasteful number, since it uses less digits than its factorization.

10205000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The square root of 10205000 is about 3194.5265689927. The cubic root of 10205000 is about 216.9057190580.

Adding to 10205000 its reverse (50201), we get a palindrome (10255201).

The spelling of 10205000 in words is "ten million, two hundred five thousand".