100381044 has 12 divisors (see below), whose sum is σ = 234222464. Its totient is φ = 33460344.

The previous prime is 100381031. The next prime is 100381081. The reversal of 100381044 is 440183001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 100381044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4182532 + ... + 4182555.

Almost surely, 2^100381044 is an apocalyptic number.

It is an amenable number.

100381044 is an abundant number, since it is smaller than the sum of its proper divisors (133841420).

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

100381044 is a wasteful number, since it uses less digits than its factorization.

100381044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8365094 (or 8365092 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 100381044 is about 10019.0340851801. The cubic root of 100381044 is about 464.7476859862.

The spelling of 100381044 in words is "one hundred million, three hundred eighty-one thousand, forty-four".