10202645 has 16 divisors (see below), whose sum is σ = 12661488. Its totient is φ = 7887360.

The previous prime is 10202641. The next prime is 10202651. The reversal of 10202645 is 54620201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4566769 + 5635876 = 2137^2 + 2374^2 .

It is not a de Polignac number, because 10202645 - 2² = 10202641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202641) 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 15 ways as a sum of consecutive naturals, for example, 32027 + ... + 32343.

It is an arithmetic number, because the mean of its divisors is an integer number (791343).

Almost surely, 2^10202645 is an apocalyptic number.

It is an amenable number.

10202645 is a deficient number, since it is larger than the sum of its proper divisors (2458843).

10202645 is a wasteful number, since it uses less digits than its factorization.

10202645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 10202645 is about 3194.1579485054. The cubic root of 10202645 is about 216.8890327191.

Adding to 10202645 its reverse (54620201), we get a palindrome (64822846).

The spelling of 10202645 in words is "ten million, two hundred two thousand, six hundred forty-five".