100776138 has 16 divisors (see below), whose sum is σ = 202577760. Its totient is φ = 33421136.

The previous prime is 100776121. The next prime is 100776139. The reversal of 100776138 is 831677001.

It is a junction number, because it is equal to n+sod(n) for n = 100776099 and 100776108.

It is not an unprimeable number, because it can be changed into a prime (100776139) 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 in 7 ways as a sum of consecutive naturals, for example, 41448 + ... + 43811.

It is an arithmetic number, because the mean of its divisors is an integer number (12661110).

Almost surely, 2^100776138 is an apocalyptic number.

100776138 is an abundant number, since it is smaller than the sum of its proper divisors (101801622).

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

100776138 is a wasteful number, since it uses less digits than its factorization.

100776138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85461.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 100776138 is about 10038.7318920270. The cubic root of 100776138 is about 465.3566277933.

The spelling of 100776138 in words is "one hundred million, seven hundred seventy-six thousand, one hundred thirty-eight".