100344440 has 32 divisors (see below), whose sum is σ = 258029280. Its totient is φ = 34403712.

The previous prime is 100344403. The next prime is 100344443. The reversal of 100344440 is 44443001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100344443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178907 + ... + 179466.

It is an arithmetic number, because the mean of its divisors is an integer number (8063415).

Almost surely, 2^100344440 is an apocalyptic number.

100344440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100344440 is an abundant number, since it is smaller than the sum of its proper divisors (157684840).

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

100344440 is a wasteful number, since it uses less digits than its factorization.

100344440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358391 (or 358387 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 100344440 is about 10017.2071956209. The cubic root of 100344440 is about 464.6911889564.

Adding to 100344440 its reverse (44443001), we get a palindrome (144787441).

The spelling of 100344440 in words is "one hundred million, three hundred forty-four thousand, four hundred forty".