100472305 has 4 divisors (see below), whose sum is σ = 120566772. Its totient is φ = 80377840.

The previous prime is 100472299. The next prime is 100472369. The reversal of 100472305 is 503274001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503274001 = 17 ⋅29604353.

It can be written as a sum of positive squares in 2 ways, for example, as 73753744 + 26718561 = 8588^2 + 5169^2 .

It is not a de Polignac number, because 100472305 - 2³ = 100472297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10047226 + ... + 10047235.

It is an arithmetic number, because the mean of its divisors is an integer number (30141693).

Almost surely, 2^100472305 is an apocalyptic number.

It is an amenable number.

100472305 is a deficient number, since it is larger than the sum of its proper divisors (20094467).

100472305 is an equidigital number, since it uses as much as digits as its factorization.

100472305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20094466.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 100472305 is about 10023.5874316534. The cubic root of 100472305 is about 464.8884844546. Note that the first 3 decimals are identical.

The spelling of 100472305 in words is "one hundred million, four hundred seventy-two thousand, three hundred five".