100440636 has 12 divisors (see below), whose sum is σ = 234361512. Its totient is φ = 33480208.

The previous prime is 100440629. The next prime is 100440643. The reversal of 100440636 is 636044001.

It is an interprime number because it is at equal distance from previous prime (100440629) and next prime (100440643).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4185015 + ... + 4185038.

It is an arithmetic number, because the mean of its divisors is an integer number (19530126).

Almost surely, 2^100440636 is an apocalyptic number.

It is an amenable number.

100440636 is an abundant number, since it is smaller than the sum of its proper divisors (133920876).

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

100440636 is a wasteful number, since it uses less digits than its factorization.

100440636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370060 (or 8370058 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 100440636 is about 10022.0075833138. The cubic root of 100440636 is about 464.8396348386.

Adding to 100440636 its reverse (636044001), we get a palindrome (736484637).

The spelling of 100440636 in words is "one hundred million, four hundred forty thousand, six hundred thirty-six".