100010020 has 48 divisors (see below), whose sum is σ = 231916608. Its totient is φ = 35922560.

The previous prime is 100010017. The next prime is 100010021. The reversal of 100010020 is 20010001.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a junction number, because it is equal to n+sod(n) for n = 100009991 and 100010009.

It is not an unprimeable number, because it can be changed into a prime (100010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15522 + ... + 20998.

It is an arithmetic number, because the mean of its divisors is an integer number (4831596).

Almost surely, 2^100010020 is an apocalyptic number.

100010020 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 100010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115958304).

100010020 is an abundant number, since it is smaller than the sum of its proper divisors (131906588).

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

100010020 is a wasteful number, since it uses less digits than its factorization.

100010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 100010020 is about 10000.5009874506. The cubic root of 100010020 is about 464.1743857502.

Adding to 100010020 its reverse (20010001), we get a palindrome (120020021).

The spelling of 100010020 in words is "one hundred million, ten thousand, twenty".