100400344 has 16 divisors (see below), whose sum is σ = 205364520. Its totient is φ = 45636480.

The previous prime is 100400329. The next prime is 100400357. The reversal of 100400344 is 443004001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570369 + ... + 570544.

Almost surely, 2^100400344 is an apocalyptic number.

It is an amenable number.

100400344 is an abundant number, since it is smaller than the sum of its proper divisors (104964176).

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

100400344 is a wasteful number, since it uses less digits than its factorization.

100400344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140930 (or 1140926 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 100400344 is about 10019.9972055884. The cubic root of 100400344 is about 464.7774693502. Note that the first 3 decimals are identical.

Adding to 100400344 its reverse (443004001), we get a palindrome (543404345).

The spelling of 100400344 in words is "one hundred million, four hundred thousand, three hundred forty-four".