100641044 has 12 divisors (see below), whose sum is σ = 201282144. Its totient is φ = 43131864.

The previous prime is 100641041. The next prime is 100641059. The reversal of 100641044 is 440146001.

It is a happy number.

100641044 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100641041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797134 + ... + 1797189.

It is an arithmetic number, because the mean of its divisors is an integer number (16773512).

Almost surely, 2^100641044 is an apocalyptic number.

100641044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

100641044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100641044 is a wasteful number, since it uses less digits than its factorization.

100641044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594334 (or 3594332 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 100641044 is about 10032.0009968102. Note that the first 3 decimals coincide. The cubic root of 100641044 is about 465.1485924315.

Subtracting from 100641044 its sum of digits (20), we obtain a square (100641024 = 10032²).

Adding to 100641044 its reverse (440146001), we get a palindrome (540787045).

The spelling of 100641044 in words is "one hundred million, six hundred forty-one thousand, forty-four".