100044000 has 288 divisors, whose sum is σ = 406800576. Its totient is φ = 22809600.

The previous prime is 100043989. The next prime is 100044001. The reversal of 100044000 is 440001.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100044001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251802 + ... + 252198.

It is an arithmetic number, because the mean of its divisors is an integer number (1412502).

Almost surely, 2^100044000 is an apocalyptic number.

100044000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100044000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203400288).

100044000 is an abundant number, since it is smaller than the sum of its proper divisors (306756576).

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

100044000 is a wasteful number, since it uses less digits than its factorization.

100044000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 100044000 is about 10002.1997580532. The cubic root of 100044000 is about 464.2269500154.

Adding to 100044000 its reverse (440001), we get a palindrome (100484001).

The spelling of 100044000 in words is "one hundred million, forty-four thousand".