100249636 has 12 divisors (see below), whose sum is σ = 181486620. Its totient is φ = 48396320.

The previous prime is 100249631. The next prime is 100249661. The reversal of 100249636 is 636942001.

It can be written as a sum of positive squares in 2 ways, for example, as 56160036 + 44089600 = 7494^2 + 6640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100249598 and 100249607.

It is not an unprimeable number, because it can be changed into a prime (100249631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431995 + ... + 432226.

It is an arithmetic number, because the mean of its divisors is an integer number (15123885).

Almost surely, 2^100249636 is an apocalyptic number.

It is an amenable number.

100249636 is a deficient number, since it is larger than the sum of its proper divisors (81236984).

100249636 is a wasteful number, since it uses less digits than its factorization.

100249636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864254 (or 864252 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 100249636 is about 10012.4740199413. The cubic root of 100249636 is about 464.5447983017.

The spelling of 100249636 in words is "one hundred million, two hundred forty-nine thousand, six hundred thirty-six".