100444564 has 48 divisors (see below), whose sum is σ = 203555520. Its totient is φ = 42888960.

The previous prime is 100444543. The next prime is 100444571. The reversal of 100444564 is 465444001.

It is a super-2 number, since 2×100444564² = 20178220874300192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114094 + ... + 114970.

It is an arithmetic number, because the mean of its divisors is an integer number (4240740).

Almost surely, 2^100444564 is an apocalyptic number.

It is an amenable number.

100444564 is an abundant number, since it is smaller than the sum of its proper divisors (103110956).

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

100444564 is a wasteful number, since it uses less digits than its factorization.

100444564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 100444564 is about 10022.2035501181. The cubic root of 100444564 is about 464.8456943591.

Adding to 100444564 its reverse (465444001), we get a palindrome (565888565).

The spelling of 100444564 in words is "one hundred million, four hundred forty-four thousand, five hundred sixty-four".