100003806 has 36 divisors (see below), whose sum is σ = 252052632. Its totient is φ = 28572264.

The previous prime is 100003801. The next prime is 100003807. The reversal of 100003806 is 608300001.

It is a super-2 number, since 2×100003806² = 20001522428971272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100003801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 55810 + ... + 57573.

It is an arithmetic number, because the mean of its divisors is an integer number (7001462).

Almost surely, 2^100003806 is an apocalyptic number.

100003806 is an abundant number, since it is smaller than the sum of its proper divisors (152048826).

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

100003806 is a wasteful number, since it uses less digits than its factorization.

100003806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113405 (or 113395 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 100003806 is about 10000.1902981893. The cubic root of 100003806 is about 464.1647719156.

Adding to 100003806 its reverse (608300001), we get a palindrome (708303807).

The spelling of 100003806 in words is "one hundred million, three thousand, eight hundred six".