100044520 has 16 divisors (see below), whose sum is σ = 225100260. Its totient is φ = 40017792.

The previous prime is 100044509. The next prime is 100044521. The reversal of 100044520 is 25440001.

It can be written as a sum of positive squares in 2 ways, for example, as 95609284 + 4435236 = 9778^2 + 2106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100044494 and 100044503.

It is not an unprimeable number, because it can be changed into a prime (100044521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250517 + ... + 1250596.

Almost surely, 2^100044520 is an apocalyptic number.

100044520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100044520 is an abundant number, since it is smaller than the sum of its proper divisors (125055740).

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

100044520 is a wasteful number, since it uses less digits than its factorization.

100044520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501124 (or 2501120 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 100044520 is about 10002.2257523013. The cubic root of 100044520 is about 464.2277543201.

Adding to 100044520 its reverse (25440001), we get a palindrome (125484521).

The spelling of 100044520 in words is "one hundred million, forty-four thousand, five hundred twenty".