100838506 has 4 divisors (see below), whose sum is σ = 151257762. Its totient is φ = 50419252.

The previous prime is 100838503. The next prime is 100838519. The reversal of 100838506 is 605838001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98307225 + 2531281 = 9915^2 + 1591^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (100838503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25209625 + ... + 25209628.

Almost surely, 2^100838506 is an apocalyptic number.

100838506 is a deficient number, since it is larger than the sum of its proper divisors (50419256).

100838506 is an equidigital number, since it uses as much as digits as its factorization.

100838506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50419255.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 100838506 is about 10041.8377800082. The cubic root of 100838506 is about 465.4526074485.

The spelling of 100838506 in words is "one hundred million, eight hundred thirty-eight thousand, five hundred six".