100128030 has 16 divisors (see below), whose sum is σ = 240307344. Its totient is φ = 26700800.

The previous prime is 100128019. The next prime is 100128053. The reversal of 100128030 is 30821001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

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, 1668771 + ... + 1668830.

It is an arithmetic number, because the mean of its divisors is an integer number (15019209).

Almost surely, 2^100128030 is an apocalyptic number.

100128030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100128030 is an abundant number, since it is smaller than the sum of its proper divisors (140179314).

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

100128030 is a wasteful number, since it uses less digits than its factorization.

100128030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337611.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 100128030 is about 10006.3994523505. The cubic root of 100128030 is about 464.3568864237.

Adding to 100128030 its reverse (30821001), we get a palindrome (130949031).

The spelling of 100128030 in words is "one hundred million, one hundred twenty-eight thousand, thirty".