40636100 has 18 divisors (see below), whose sum is σ = 88180554. Its totient is φ = 16254400.

The previous prime is 40636093. The next prime is 40636151. The reversal of 40636100 is 163604.

It can be written as a sum of positive squares in 3 ways, for example, as 11303044 + 29333056 = 3362^2 + 5416^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203081 + ... + 203280.

Almost surely, 2^40636100 is an apocalyptic number.

It is an amenable number.

40636100 is an abundant number, since it is smaller than the sum of its proper divisors (47544454).

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

40636100 is a wasteful number, since it uses less digits than its factorization.

40636100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406375 (or 406368 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40636100 is about 6374.6450881598. The cubic root of 40636100 is about 343.7985231778.

Adding to 40636100 its reverse (163604), we get a palindrome (40799704).

The spelling of 40636100 in words is "forty million, six hundred thirty-six thousand, one hundred".