100309250 has 16 divisors (see below), whose sum is σ = 187779384. Its totient is φ = 40123600.

The previous prime is 100309243. The next prime is 100309259. The reversal of 100309250 is 52903001.

It can be written as a sum of positive squares in 4 ways, for example, as 35200489 + 65108761 = 5933^2 + 8069^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100309259) 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 7 ways as a sum of consecutive naturals, for example, 200369 + ... + 200868.

Almost surely, 2^100309250 is an apocalyptic number.

100309250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100309250 is a deficient number, since it is larger than the sum of its proper divisors (87470134).

100309250 is an equidigital number, since it uses as much as digits as its factorization.

100309250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401254 (or 401244 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 100309250 is about 10015.4505640036. The cubic root of 100309250 is about 464.6368614326.

The spelling of 100309250 in words is "one hundred million, three hundred nine thousand, two hundred fifty".