100030020 has 48 divisors (see below), whose sum is σ = 282719808. Its totient is φ = 26423680.

The previous prime is 100030001. The next prime is 100030043. The reversal of 100030020 is 20030001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 100029990 and 100030008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371 + ... + 14210.

It is an arithmetic number, because the mean of its divisors is an integer number (5889996).

Almost surely, 2^100030020 is an apocalyptic number.

100030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141359904).

100030020 is an abundant number, since it is smaller than the sum of its proper divisors (182689788).

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

100030020 is a wasteful number, since it uses less digits than its factorization.

100030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15700 (or 15698 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 100030020 is about 10001.5008873669. The cubic root of 100030020 is about 464.2053255465.

Adding to 100030020 its reverse (20030001), we get a palindrome (120060021).

The spelling of 100030020 in words is "one hundred million, thirty thousand, twenty".