100430228 has 12 divisors (see below), whose sum is σ = 176389332. Its totient is φ = 50033280.

The previous prime is 100430227. The next prime is 100430263. The reversal of 100430228 is 822034001.

It can be written as a sum of positive squares in 2 ways, for example, as 53260804 + 47169424 = 7298^2 + 6868^2 .

It is a super-2 number, since 2×100430228² = 20172461392263968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100430221) 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, 44213 + ... + 46428.

It is an arithmetic number, because the mean of its divisors is an integer number (14699111).

Almost surely, 2^100430228 is an apocalyptic number.

It is an amenable number.

100430228 is a deficient number, since it is larger than the sum of its proper divisors (75959104).

100430228 is a wasteful number, since it uses less digits than its factorization.

100430228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90922 (or 90920 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 100430228 is about 10021.4883126210. The cubic root of 100430228 is about 464.8235781965.

Adding to 100430228 its reverse (822034001), we get a palindrome (922464229).

The spelling of 100430228 in words is "one hundred million, four hundred thirty thousand, two hundred twenty-eight".