100444220 has 24 divisors (see below), whose sum is σ = 220104864. Its totient is φ = 38430656.

The previous prime is 100444213. The next prime is 100444249. The reversal of 100444220 is 22444001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108719 + ... + 109638.

It is an arithmetic number, because the mean of its divisors is an integer number (9171036).

Almost surely, 2^100444220 is an apocalyptic number.

100444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100444220 is an abundant number, since it is smaller than the sum of its proper divisors (119660644).

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

100444220 is a wasteful number, since it uses less digits than its factorization.

100444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218389 (or 218387 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 100444220 is about 10022.1863882089. The cubic root of 100444220 is about 464.8451636946.

Adding to 100444220 its reverse (22444001), we get a palindrome (122888221).

The spelling of 100444220 in words is "one hundred million, four hundred forty-four thousand, two hundred twenty".