100033445 has 8 divisors (see below), whose sum is σ = 120243480. Its totient is φ = 79891200.

The previous prime is 100033411. The next prime is 100033447. The reversal of 100033445 is 544330001.

It can be written as a sum of positive squares in 4 ways, for example, as 4169764 + 95863681 = 2042^2 + 9791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100033445 - 2²⁰ = 98984869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100033447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13640 + ... + 19649.

It is an arithmetic number, because the mean of its divisors is an integer number (15030435).

Almost surely, 2^100033445 is an apocalyptic number.

It is an amenable number.

100033445 is a deficient number, since it is larger than the sum of its proper divisors (20210035).

100033445 is an equidigital number, since it uses as much as digits as its factorization.

100033445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33895.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 100033445 is about 10001.6721102024. The cubic root of 100033445 is about 464.2106235730.

Adding to 100033445 its reverse (544330001), we get a palindrome (644363446).

The spelling of 100033445 in words is "one hundred million, thirty-three thousand, four hundred forty-five".