100261172 has 24 divisors (see below), whose sum is σ = 202668480. Its totient is φ = 42892160.

The previous prime is 100261169. The next prime is 100261177. The reversal of 100261172 is 271162001.

It is a super-2 number, since 2×100261172² = 20104605221627168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100261177) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66272 + ... + 67767.

It is an arithmetic number, because the mean of its divisors is an integer number (8444520).

Almost surely, 2^100261172 is an apocalyptic number.

It is an amenable number.

100261172 is an abundant number, since it is smaller than the sum of its proper divisors (102407308).

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

100261172 is a wasteful number, since it uses less digits than its factorization.

100261172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134071 (or 134069 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 100261172 is about 10013.0500847644. The cubic root of 100261172 is about 464.5626164320.

The spelling of 100261172 in words is "one hundred million, two hundred sixty-one thousand, one hundred seventy-two".