40636245 has 16 divisors (see below), whose sum is σ = 70019712. Its totient is φ = 20005440.

The previous prime is 40636229. The next prime is 40636259. The reversal of 40636245 is 54263604.

40636245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40636245 - 2⁴ = 40636229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 104001 + ... + 104390.

It is an arithmetic number, because the mean of its divisors is an integer number (4376232).

Almost surely, 2^40636245 is an apocalyptic number.

It is an amenable number.

40636245 is a deficient number, since it is larger than the sum of its proper divisors (29383467).

40636245 is a wasteful number, since it uses less digits than its factorization.

40636245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208412.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 40636245 is about 6374.6564613319. The cubic root of 40636245 is about 343.7989320976.

Adding to 40636245 its reverse (54263604), we get a palindrome (94899849).

The spelling of 40636245 in words is "forty million, six hundred thirty-six thousand, two hundred forty-five".